diff --git a/samplequestions/stacklibrary/Algebra-Refresher/02-Factorisation-of-whole-numbers/AlgMap-2-1.xml b/samplequestions/stacklibrary/Algebra-Refresher/02-Factorisation-of-whole-numbers/AlgMap-2-1.xml
index 589de1919573c39ebce8a1aa0862e907df4cabce..624ecfdaf5e54a78d9362b848dd3d5fe19cc64cb 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/02-Factorisation-of-whole-numbers/AlgMap-2-1.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/02-Factorisation-of-whole-numbers/AlgMap-2-1.xml
@@ -25,7 +25,7 @@ ta:factor(n);</text>
<text><![CDATA[<p>[[feedback:prt1]]</p>]]></text>
</specificfeedback>
<questionnote format="moodle_auto_format">
- <text>{@n@} = {@ta@} </text>
+ <text>{@n@} = {@ta@}</text>
</questionnote>
<questiondescription format="moodle_auto_format">
<text/>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/02-Factorisation-of-whole-numbers/AlgMap-2-2.xml b/samplequestions/stacklibrary/Algebra-Refresher/02-Factorisation-of-whole-numbers/AlgMap-2-2.xml
index be63a16d99e43e0c7fd56103ac691263eb2212cb..838e5d2f99e7ef5dcdacd2d2fc7aaf65bd35ed04 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/02-Factorisation-of-whole-numbers/AlgMap-2-2.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/02-Factorisation-of-whole-numbers/AlgMap-2-2.xml
@@ -20,8 +20,7 @@
<questionvariables>
<text>a:2^(rand(1)+1)*3^(rand(2))*5^(rand(2));
b:2^(rand(1)+1)*3^(rand(2))*5^(rand(2))*7;
-ta:ratsimp(rootscontract(radcan(sqrt(a)*sqrt(b))));
-</text>
+ta:ratsimp(rootscontract(radcan(sqrt(a)*sqrt(b))));</text>
</questionvariables>
<specificfeedback format="html">
<text><![CDATA[<p>[[feedback:prt1]]</p>]]></text>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/02-Factorisation-of-whole-numbers/AlgMap-2-3.xml b/samplequestions/stacklibrary/Algebra-Refresher/02-Factorisation-of-whole-numbers/AlgMap-2-3.xml
index 1c6b76b70a0c9f7a7bf7aa2fd2f5717c362484aa..8ac52386232b22451d9d3f27342be6d536324ccb 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/02-Factorisation-of-whole-numbers/AlgMap-2-3.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/02-Factorisation-of-whole-numbers/AlgMap-2-3.xml
@@ -32,7 +32,7 @@ ta:gcd(a,b);</text>
<text><![CDATA[<p>[[feedback:prt1]]</p>]]></text>
</specificfeedback>
<questionnote format="moodle_auto_format">
- <text>(Hcf) of \({@a@}\) and \({@b@}\) is \({@ta@}\). </text>
+ <text>(Hcf) of \({@a@}\) and \({@b@}\) is \({@ta@}\).</text>
</questionnote>
<questiondescription format="moodle_auto_format">
<text/>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/02-Factorisation-of-whole-numbers/AlgMap-2-4.xml b/samplequestions/stacklibrary/Algebra-Refresher/02-Factorisation-of-whole-numbers/AlgMap-2-4.xml
index f0d451146126e91788d96bf61eb763e644b00ca2..897bff0451c610532ae35068811f52b914fd5514 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/02-Factorisation-of-whole-numbers/AlgMap-2-4.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/02-Factorisation-of-whole-numbers/AlgMap-2-4.xml
@@ -33,7 +33,7 @@ ta:lcm(a,b);</text>
<text><![CDATA[<p>[[feedback:prt1]]</p>]]></text>
</specificfeedback>
<questionnote format="moodle_auto_format">
- <text>(LCM) of \({@a@}\) and \({@b@}\) is \({@ta@}\). </text>
+ <text>(LCM) of \({@a@}\) and \({@b@}\) is \({@ta@}\).</text>
</questionnote>
<questiondescription format="moodle_auto_format">
<text/>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-1.xml b/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-1.xml
index 61d1f54c1b47ad905283e5baf33d90664916293d..b495b3d26619fd4f39d0b372c938271d897f17da 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-1.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-1.xml
@@ -26,14 +26,13 @@ d:b;
c:d+1;
ta:(a/b)+(c/d);
lcm:lcm(b,d);
-simp:false;
-</text>
+simp:false;</text>
</questionvariables>
<specificfeedback format="html">
<text><![CDATA[<p>[[feedback:prt1]]</p>]]></text>
</specificfeedback>
<questionnote format="moodle_auto_format">
- <text>\[{@a/b@}+{@c/d@} = {@ta@}.\] </text>
+ <text>\[{@a/b@}+{@c/d@} = {@ta@}.\]</text>
</questionnote>
<questiondescription format="moodle_auto_format">
<text/>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-2.xml b/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-2.xml
index a7658e6a407b080e3e736766a5dbfe3afa2c0f78..05167218dd2b2799c87ee9f4cedd2ca68c8b2d85 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-2.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-2.xml
@@ -26,8 +26,7 @@ d:b;
c:d+rand(3)+1;
ta:(a/b)-(c/d);
lcm:lcm(b,d);
-simp:false;
-</text>
+simp:false;</text>
</questionvariables>
<specificfeedback format="html">
<text><![CDATA[<p>[[feedback:prt1]]</p>]]></text>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-3.xml b/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-3.xml
index 0458520829115e03283c693173fbbc92aa925ee5..cfb6403034cd83e8897a7f39f54cabc890c80ac9 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-3.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-3.xml
@@ -27,8 +27,7 @@ d:b+1+2*rand(3);
c:d+rand(3)+1;
ta:(a/b)+(c/d);
lcm:lcm(b,d);
-simp:false;
-</text>
+simp:false;</text>
</questionvariables>
<specificfeedback format="html">
<text><![CDATA[<p>[[feedback:prt1]]</p>]]></text>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-4.xml b/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-4.xml
index 2a7b98eef9b9cc5be9c4d47d5298b8b55addb75d..c6daab9053620ddc13194e237659780c58438967 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-4.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-4.xml
@@ -27,8 +27,7 @@ d:rand([3,7,11]);
c:rand([2,5,13])^rand([0,1]);
ta:(a/b)-(c/d);
lcm:lcm(b,d);
-simp:false;
-</text>
+simp:false;</text>
</questionvariables>
<specificfeedback format="html">
<text><![CDATA[<p>[[feedback:prt1]]</p>]]></text>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-5.xml b/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-5.xml
index 8f5d3e1c8512b9e044de3227c02ab46c15109a30..3e769bebe037c7def2aaed0b8266cde1a4e04407 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-5.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-5.xml
@@ -27,14 +27,13 @@ d:7;
c:rand([1,2,3,4,5,6,8,9]);
ta:(a/b)+(c/d);
lcm:lcm(b,d);
-simp:false;
-</text>
+simp:false;</text>
</questionvariables>
<specificfeedback format="html">
<text><![CDATA[<p>[[feedback:prt1]]</p>]]></text>
</specificfeedback>
<questionnote format="moodle_auto_format">
- <text>\[{@a/b@}+{@c/d@} = {@ta@}.\] </text>
+ <text>\[{@a/b@}+{@c/d@} = {@ta@}.\]</text>
</questionnote>
<questiondescription format="moodle_auto_format">
<text/>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-6.xml b/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-6.xml
index 4285eeae5e154e74c474381f79419e4ecac7121b..47c21864c1f4a9d33a0b1fd6c329901a72bc4f0a 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-6.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-6.xml
@@ -27,8 +27,7 @@ d:3;
c:rand([1,2,4,5,7,8,10]);
ta:(a/b)-(c/d);
lcm:lcm(b,d);
-simp:false;
-</text>
+simp:false;</text>
</questionvariables>
<specificfeedback format="html">
<text><![CDATA[<p>[[feedback:prt1]]</p>]]></text>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-7.xml b/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-7.xml
index 7f9459ff7fea356b57ed77f469ca3d8d6f6c2c21..ef3d182dce51c97deb5ea2c420c52223b68e8d43 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-7.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-7.xml
@@ -28,8 +28,7 @@ d:f*b;
c:d-1;
ta:(a/b)+(c/d);
lcm:lcm(b,d);
-simp:false;
-</text>
+simp:false;</text>
</questionvariables>
<specificfeedback format="html">
<text><![CDATA[<p>[[feedback:prt1]]</p>]]></text>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-8.xml b/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-8.xml
index 8262fc00d9fee2f02aa1c9a60aee7180a046f600..28015759293217a1c59776110b44bc341583fac4 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-8.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-8.xml
@@ -28,8 +28,7 @@ d:f*b;
c:1;
ta:(a/b)-(c/d);
lcm:lcm(b,d);
-simp:false
-</text>
+simp:false</text>
</questionvariables>
<specificfeedback format="html">
<text><![CDATA[<p>[[feedback:prt1]]</p>]]></text>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-9.xml b/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-9.xml
index 0fdaa11f3501f8c07d89e02d9e87c52de841d51b..f7344c556e52901f2abe43604a2acaf02df24f9a 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-9.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/03-Addition-and-subtraction-of-fractions/AlgMap-3-9.xml
@@ -28,8 +28,7 @@ d:f*rand([2,4]);
c:d+1;
ta:(a/b)+(c/d);
lcm:lcm(b,d);
-simp:false;
-</text>
+simp:false;</text>
</questionvariables>
<specificfeedback format="html">
<text><![CDATA[<p>[[feedback:prt1]]</p>]]></text>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/05-Combinations-of-arithmetic-operations-on-fractions/AlgMap-5-1.xml b/samplequestions/stacklibrary/Algebra-Refresher/05-Combinations-of-arithmetic-operations-on-fractions/AlgMap-5-1.xml
index c2f32580f49f70a5f3b80ba9d277bb0520169d1c..18849d72ec816e80d5197a1a7f807bd94f7010af 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/05-Combinations-of-arithmetic-operations-on-fractions/AlgMap-5-1.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/05-Combinations-of-arithmetic-operations-on-fractions/AlgMap-5-1.xml
@@ -28,8 +28,7 @@ f:e+rand(4)+1;
g:rand(5)+1;
h:g+rand(4)+1;
ta:((a/b)+(c/d))/((e/f)+(g/h));
-simp:false;
-</text>
+simp:false;</text>
</questionvariables>
<specificfeedback format="html">
<text><![CDATA[<p>[[feedback:prt1]]</p>]]></text>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/05-Combinations-of-arithmetic-operations-on-fractions/AlgMap-5-2.xml b/samplequestions/stacklibrary/Algebra-Refresher/05-Combinations-of-arithmetic-operations-on-fractions/AlgMap-5-2.xml
index 22c38de5e18a0c2a939c5c8c914c184a9ab8963b..f36c89815014d63ab83b467221bfdb300912b445 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/05-Combinations-of-arithmetic-operations-on-fractions/AlgMap-5-2.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/05-Combinations-of-arithmetic-operations-on-fractions/AlgMap-5-2.xml
@@ -28,8 +28,7 @@ t:c/d;
ta1:(s^2+2*t^2);
ta2:(3-s*t);
ta:ta1/ta2;
-simp:false;
-</text>
+simp:false;</text>
</questionvariables>
<specificfeedback format="html">
<text><![CDATA[<p>[[feedback:prt1]]</p>]]></text>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/08-Algebraic-fractions/AlgMap-8-21.xml b/samplequestions/stacklibrary/Algebra-Refresher/08-Algebraic-fractions/AlgMap-8-21.xml
index 9ff4c4130233c42334c5b65705d8b6a3ecbe95a4..2bea67bb350ea05bd31ebb6ad27a8320b6376983 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/08-Algebraic-fractions/AlgMap-8-21.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/08-Algebraic-fractions/AlgMap-8-21.xml
@@ -157,7 +157,7 @@ fta:ev(factor(ta),simp);</text>
</expected>
</qtest>
<qtest>
- <testcase>3</testcase>
+ <testcase>2</testcase>
<description/>
<testinput>
<name>ans</name>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/08-Algebraic-fractions/AlgMap-8-23.xml b/samplequestions/stacklibrary/Algebra-Refresher/08-Algebraic-fractions/AlgMap-8-23.xml
index 6f9ae0720809ef756cb4021cf784b3b26456c128..9705ed3a4f7fabe9e09c78a49d41ba8d1aec93b9 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/08-Algebraic-fractions/AlgMap-8-23.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/08-Algebraic-fractions/AlgMap-8-23.xml
@@ -11,8 +11,7 @@
Give an equivalent expression without brackets.
<br>
= [[input:ans]]
-[[validation:ans]]
-]]></text>
+[[validation:ans]]]]></text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[<html>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/08-Algebraic-fractions/AlgMap-8-3.xml b/samplequestions/stacklibrary/Algebra-Refresher/08-Algebraic-fractions/AlgMap-8-3.xml
index c4e14d57cf6b9e5bf4fb5daee496d846bf87393c..b63e2d3d82f1aee6d21d21c2d22a0cb466eb4c5b 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/08-Algebraic-fractions/AlgMap-8-3.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/08-Algebraic-fractions/AlgMap-8-3.xml
@@ -26,7 +26,7 @@ ta:ev(1/a,simp);</text>
<text><![CDATA[<p>[[feedback:prt1]]</p>]]></text>
</specificfeedback>
<questionnote format="moodle_auto_format">
- <text>\[ \frac{@v@}{@ev(a*v,simp)@} = {@ta@}. \] </text>
+ <text>\[ \frac{@v@}{@ev(a*v,simp)@} = {@ta@}. \]</text>
</questionnote>
<questiondescription format="moodle_auto_format">
<text/>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/08-Algebraic-fractions/AlgMap-8-5.xml b/samplequestions/stacklibrary/Algebra-Refresher/08-Algebraic-fractions/AlgMap-8-5.xml
index 40b3a601fbe0e9b1c1116fd0034cc5cbf97ce0a7..dbe5162f51b53b3aea16e83f3653b7f8d0951d07 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/08-Algebraic-fractions/AlgMap-8-5.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/08-Algebraic-fractions/AlgMap-8-5.xml
@@ -24,7 +24,7 @@
<text><![CDATA[<p>[[feedback:prt1]]</p>]]></text>
</specificfeedback>
<questionnote format="moodle_auto_format">
- <text>\[ \frac{@b-a@}{@a-b@} = {@ta@}. \] </text>
+ <text>\[ \frac{@b-a@}{@a-b@} = {@ta@}. \]</text>
</questionnote>
<questiondescription format="moodle_auto_format">
<text/>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/08-Algebraic-fractions/AlgMap-8-8.xml b/samplequestions/stacklibrary/Algebra-Refresher/08-Algebraic-fractions/AlgMap-8-8.xml
index e43538bb2784c487f81b1df765b38d5c6b1ab275..0a42df4a482f23ccaddbf8867b5ade41337cd94c 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/08-Algebraic-fractions/AlgMap-8-8.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/08-Algebraic-fractions/AlgMap-8-8.xml
@@ -29,7 +29,7 @@ ta:ev((a*f*(v-c))/(b*f*(v-c)^3),simp);</text>
<text><![CDATA[<p>[[feedback:prt1]]</p>]]></text>
</specificfeedback>
<questionnote format="moodle_auto_format">
- <text>\[ \frac{@ev(a*f*(v-c),simp)@}{@ev(b*f*(v-c)^3,simp)@} = {@ta@}. \] </text>
+ <text>\[ \frac{@ev(a*f*(v-c),simp)@}{@ev(b*f*(v-c)^3,simp)@} = {@ta@}. \]</text>
</questionnote>
<questiondescription format="moodle_auto_format">
<text/>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/09-Linear-equations/AlgMap-9-1.xml b/samplequestions/stacklibrary/Algebra-Refresher/09-Linear-equations/AlgMap-9-1.xml
index 549bfa002493a8778ef9ca81ddd91995bb26496e..80fb543dea2e0c8fe534bd916383b9cd5f26b191 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/09-Linear-equations/AlgMap-9-1.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/09-Linear-equations/AlgMap-9-1.xml
@@ -37,7 +37,7 @@ ta:(k2-k1)/cf1;</text>
<text><![CDATA[<p>[[feedback:prt1]]</p>]]></text>
</specificfeedback>
<questionnote format="moodle_auto_format">
- <text>\[ {@cf1*v+k1@} = {@k2@} \Rightarrow {@v@} = {@ta@}. \] </text>
+ <text>\[ {@cf1*v+k1@} = {@k2@} \Rightarrow {@v@} = {@ta@}. \]</text>
</questionnote>
<questiondescription format="moodle_auto_format">
<text/>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/09-Linear-equations/AlgMap-9-6.xml b/samplequestions/stacklibrary/Algebra-Refresher/09-Linear-equations/AlgMap-9-6.xml
index eafe27691586819fdc3df9691c6b2759aa88f6c1..6587262f42ee45c675e6df7967722c9267bc95cb 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/09-Linear-equations/AlgMap-9-6.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/09-Linear-equations/AlgMap-9-6.xml
@@ -37,7 +37,7 @@ ta:35/4;</text>
<text><![CDATA[<p>[[feedback:prt1]]</p>]]></text>
</specificfeedback>
<questionnote format="moodle_auto_format">
- <text>\[ {@(3-v)/5+3@} = {@(2*v+1)/10@} \Rightarrow {@v@} = {@ta@}. \] </text>
+ <text>\[ {@(3-v)/5+3@} = {@(2*v+1)/10@} \Rightarrow {@v@} = {@ta@}. \]</text>
</questionnote>
<questiondescription format="moodle_auto_format">
<text/>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/10-Expressions-single-term-common-factors/AlgMap-10-7.xml b/samplequestions/stacklibrary/Algebra-Refresher/10-Expressions-single-term-common-factors/AlgMap-10-7.xml
index 1ef7272c71e4b8ae4435c39381430badc1e25f49..3540ffeebe99ad44e809ef33e28fa6ed061b5936 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/10-Expressions-single-term-common-factors/AlgMap-10-7.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/10-Expressions-single-term-common-factors/AlgMap-10-7.xml
@@ -12,7 +12,7 @@
<generalfeedback format="html">
<text>Simply remove all common factors from the expression. In this example:
\[ {@v^p1+v^p2@} = {@ta@}. \]
-The important thing is to remember the 1 after factoring. </text>
+The important thing is to remember the 1 after factoring.</text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/10-Expressions-single-term-common-factors/AlgMap-10-8.xml b/samplequestions/stacklibrary/Algebra-Refresher/10-Expressions-single-term-common-factors/AlgMap-10-8.xml
index 786d89c56c81ff1cb50aba4888a9da3c82d84084..7406b65c1921a6e815a6350d9adc17bc9ea7745a 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/10-Expressions-single-term-common-factors/AlgMap-10-8.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/10-Expressions-single-term-common-factors/AlgMap-10-8.xml
@@ -12,7 +12,7 @@
<generalfeedback format="html">
<text>Simply remove all common factors from the expression. In this example:
\[ {@v^p1-v^p2@} = {@ta@}. \]
-The important thing is to remember the 1 after factoring. </text>
+The important thing is to remember the 1 after factoring.</text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/11-Rearranging-algebraic-formulae/AlgMap-11-11.xml b/samplequestions/stacklibrary/Algebra-Refresher/11-Rearranging-algebraic-formulae/AlgMap-11-11.xml
index bbce064231ad49c7d1bc54219018f30ff6bb2c2b..c5a6449ef7a007a74d9131131da6b6bb22715230 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/11-Rearranging-algebraic-formulae/AlgMap-11-11.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/11-Rearranging-algebraic-formulae/AlgMap-11-11.xml
@@ -36,7 +36,7 @@ Now you have an equation for \(x\).</text>
<text><![CDATA[<p>[[feedback:prt1]]</p>]]></text>
</specificfeedback>
<questionnote format="moodle_auto_format">
- <text>\[ {@y@} = {@sqrt(x^2+4)@} \Rightarrow x = {@ta@} . \] </text>
+ <text>\[ {@y@} = {@sqrt(x^2+4)@} \Rightarrow x = {@ta@} . \]</text>
</questionnote>
<questiondescription format="moodle_auto_format">
<text/>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/11-Rearranging-algebraic-formulae/AlgMap-11-9.xml b/samplequestions/stacklibrary/Algebra-Refresher/11-Rearranging-algebraic-formulae/AlgMap-11-9.xml
index f3be7bb74c7bc2b312077c497273cbd7d1c57f54..1d69b2d14e795425d25c1875e40107622b783a74 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/11-Rearranging-algebraic-formulae/AlgMap-11-9.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/11-Rearranging-algebraic-formulae/AlgMap-11-9.xml
@@ -33,7 +33,7 @@ Now you have an equation for \(x\).</text>
<text><![CDATA[<p>[[feedback:prt1]]</p>]]></text>
</specificfeedback>
<questionnote format="moodle_auto_format">
- <text>\[{@a@} = {@sqrt(b+x)@} \Rightarrow x = {@ta@}.\] </text>
+ <text>\[{@a@} = {@sqrt(b+x)@} \Rightarrow x = {@ta@}.\]</text>
</questionnote>
<questiondescription format="moodle_auto_format">
<text/>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-1-.xml b/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-1-.xml
index 65b64827210efc7f34b70020c1907013f657afb4..79dd07fdd8aef83c0083bb82cb24575be46196c9 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-1-.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-1-.xml
@@ -2,7 +2,7 @@
<quiz>
<question type="stack">
<name>
- <text>AlgMap-13.1 </text>
+ <text>AlgMap-13.1</text>
</name>
<questiontext format="html">
<text><![CDATA[Factorise the following:
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-13.xml b/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-13.xml
index 50a4e5f552ca9d6a0467501a916f75a5b965cb96..55437e78c0ee6da71dab9c2a17efb503c28f9521 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-13.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-13.xml
@@ -17,7 +17,7 @@ The equation is of the form 'square, twice product, square':
Where:
\[ a^2 = x. \]
\[ b^2 = 4y. \]
-Therefore \((a+b)^2 = (x+4y)^2. \) </text>
+Therefore \((a+b)^2 = (x+4y)^2. \)</text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-16.xml b/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-16.xml
index 57af19ee6f3456a1f17a877e42c04bb037dd5b26..3b33f6b1c9193c5021cbe9a1852116b8fc427424 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-16.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-16.xml
@@ -13,7 +13,7 @@
<text>The trick to factorising this expression is to carry out a substitution, \(u=xy\). Then we obtain the quadratic:
\[ u^2-2u+1, \]
which is easily solved by normal methods:
-\[ u^2-2u+1 = \left(u-1\right)^2 = \left(xy-1\right)^2. \] </text>
+\[ u^2-2u+1 = \left(u-1\right)^2 = \left(xy-1\right)^2. \]</text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-17.xml b/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-17.xml
index 343ead376846da503b9476a2fee069bacb7a56f6..8368496bb1202fa988c56151808a4b3be37e110d 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-17.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-17.xml
@@ -32,7 +32,7 @@ which is now clearly a difference of two squares. So factorising gives:
<text><![CDATA[<p>[[feedback:prt1]]</p>]]></text>
</specificfeedback>
<questionnote format="moodle_auto_format">
- <text>\[ {@(a+b)^2-(a+c)^2@} = {@ta@}. \] </text>
+ <text>\[ {@(a+b)^2-(a+c)^2@} = {@ta@}. \]</text>
</questionnote>
<questiondescription format="moodle_auto_format">
<text/>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-20.xml b/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-20.xml
index da7272cd230db262631f903f727618b3e8066c25..ff25eab13200076a56ac0a72adc1238550bdced4 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-20.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-20.xml
@@ -36,7 +36,7 @@ Then factor out \(x+y\) to give:
<text><![CDATA[<p>[[feedback:prt1]]</p>]]></text>
</specificfeedback>
<questionnote format="moodle_auto_format">
- <text>\[ {@(a*x+a*y-b*x-b*y)@} = {@ta@}. \] </text>
+ <text>\[ {@(a*x+a*y-b*x-b*y)@} = {@ta@}. \]</text>
</questionnote>
<questiondescription format="moodle_auto_format">
<text/>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-4.xml b/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-4.xml
index 3e41d0ca0c5acee95621aec302994464f759fe4f..90f83b48c22e16886ea5ccb164aaecee409b56c0 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-4.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-4.xml
@@ -38,7 +38,7 @@ ta:factor((cf1*v+a)*(cf2*v+b));</text>
<text><![CDATA[<p>[[feedback:prt1]]</p>]]></text>
</specificfeedback>
<questionnote format="moodle_auto_format">
- <text>\[ {@expand((cf1*v+a)*(cf2*v+b))@} = {@ta@}. \] </text>
+ <text>\[ {@expand((cf1*v+a)*(cf2*v+b))@} = {@ta@}. \]</text>
</questionnote>
<questiondescription format="moodle_auto_format">
<text/>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-7.xml b/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-7.xml
index eab28d2bd5d024c8c629a029f11f119a032650f8..a5e17aa422e95e9008d333e98eb4d533f9d6cefc 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-7.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-7.xml
@@ -43,7 +43,7 @@ ta:factor((cf1*v+a)*(cf2*v+b));</text>
<text><![CDATA[<p>[[feedback:prt1]]</p>]]></text>
</specificfeedback>
<questionnote format="moodle_auto_format">
- <text>\[ {@expand((cf1*v+a)*(cf2*v+b))@} = {@ta@}. \] </text>
+ <text>\[ {@expand((cf1*v+a)*(cf2*v+b))@} = {@ta@}. \]</text>
</questionnote>
<questiondescription format="moodle_auto_format">
<text/>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-8.xml b/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-8.xml
index 218cf00cefa2c9d61449cc0190f892cb151a6ad5..d5b67e265b67c20ea1abf684d6c423a9fd2774f7 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-8.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/13-Factorising-algebraic-expressions/AlgMap-13-8.xml
@@ -148,7 +148,7 @@ ta:factor((cf1*v+a)*(cf2*v+b));</text>
</expected>
</qtest>
<qtest>
- <testcase>3</testcase>
+ <testcase>2</testcase>
<description/>
<testinput>
<name>ans</name>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/14-Algebraic-fractions-involving-factorising/AlgMap-14-6.xml b/samplequestions/stacklibrary/Algebra-Refresher/14-Algebraic-fractions-involving-factorising/AlgMap-14-6.xml
index f9bebeeabd084a995ce3147e9f8e7f3da1278861..c8212ad5e7bccc12f63441016871ba95cfed63d6 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/14-Algebraic-fractions-involving-factorising/AlgMap-14-6.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/14-Algebraic-fractions-involving-factorising/AlgMap-14-6.xml
@@ -14,8 +14,7 @@
<text>By factorisng the numerator and the denominator we obtain:
\[\frac{@factor(n)@}{@factor(d)@}.\]
Then we can cancel the \({@x@}\)'s and constants from the numerator
-and denominator to obtain: \[ {@ta@}. \]
-</text>
+and denominator to obtain: \[ {@ta@}. \]</text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/15-Quadratic-equations/AlgMap-15-1.xml b/samplequestions/stacklibrary/Algebra-Refresher/15-Quadratic-equations/AlgMap-15-1.xml
index a7ee1c7972fbe4f70283f2472e72644aedf0c95a..63bcf80423082f713f73918e7b0970a9b3e53f2d 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/15-Quadratic-equations/AlgMap-15-1.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/15-Quadratic-equations/AlgMap-15-1.xml
@@ -14,8 +14,7 @@ Write this quadratic in factored form: [[input:ansf]]\(=0\). [[validation:ansf]]
<br>
Solve this equation, giving your answer as a set \(\left(\mbox{e.g. }\left\{x_1 , x_2\right\}\right)\): <br>
<br>
-\({@v@} \in \) [[input:ans]] [[validation:ans]][[feedback:prt1]]
-]]></text>
+\({@v@} \in \) [[input:ans]] [[validation:ans]][[feedback:prt1]]]]></text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[There are multiple ways of solving quadratic equations but if you can spot how to factorise the quadratic then this method is by far the fastest and simplest. In this example we can factorise the quadratic to give:
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/15-Quadratic-equations/AlgMap-15-3.xml b/samplequestions/stacklibrary/Algebra-Refresher/15-Quadratic-equations/AlgMap-15-3.xml
index d5d341878b29a9836d5e7f075c29550e1b61d605..bb8cd6de4aa41ebee70887498861a997d9811d53 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/15-Quadratic-equations/AlgMap-15-3.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/15-Quadratic-equations/AlgMap-15-3.xml
@@ -17,8 +17,7 @@ Solve the quadratic equation \({@tq@}=0\).
Give your answer as a set
\(\left(\mbox e.g.\ \left\{x_1 , x_2\right\} \right)\): <br>
[[input:ans2]] [[validation:ans2]]
-[[feedback:prt1]]
-]]></text>
+[[feedback:prt1]]]]></text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[When solving a more complicated quadratic a better option, than factorising, is completing the square (The method by which we remove the {@v@} term). The general rule is:
diff --git a/samplequestions/stacklibrary/Algebra-Refresher/15-Quadratic-equations/AlgMap-15-7.xml b/samplequestions/stacklibrary/Algebra-Refresher/15-Quadratic-equations/AlgMap-15-7.xml
index d9bb02a056dd03d453783c9a5a6204026480f718..82f5d89b5148de069d490f7b4854912327aff11e 100644
--- a/samplequestions/stacklibrary/Algebra-Refresher/15-Quadratic-equations/AlgMap-15-7.xml
+++ b/samplequestions/stacklibrary/Algebra-Refresher/15-Quadratic-equations/AlgMap-15-7.xml
@@ -13,8 +13,7 @@
[[validation:ans]]
<br>
-(i.e. the form \(\left({@v@}+a\right)^2+b\)).
-]]></text>
+(i.e. the form \(\left({@v@}+a\right)^2+b\)).]]></text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[Our aim is to 'destroy' the \(x\) term. We do this by considering the general quadratic:
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_04/CR-Diff-04-product-1-b.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_04/CR-Diff-04-product-1-b.xml
index e27abfa8913cc7a16214a560584e6d82b4b2ba02..84f7f90f0a7876c3fa20fcd97a3f74b26bbb40ed 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_04/CR-Diff-04-product-1-b.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_04/CR-Diff-04-product-1-b.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Differentiate {@p@} with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the product rule <hint>calc_product_rule</hint> as follows:
@@ -17,7 +16,7 @@
\frac{d}{d{@v@}}[{@p@}] &\displaystyle =&\displaystyle \left[\frac{d}{d{@v@}}({@pp1@})\right]\cdot {@pp2@} + ({@pp1@})\cdot \left[\frac{d}{d{@v@}}[{@pp2@}]\right] \\
&\displaystyle =&\displaystyle ({@diff(pp1,v)@})\cdot {@pp2@} + ({@pp1@})\cdot {@diff(pp2,v)@} \\
&\displaystyle =&\displaystyle {@diff(p,v)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_04/CR-Diff-04-product-1-c.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_04/CR-Diff-04-product-1-c.xml
index 1d27af40a33fa81678a429357c7fbd47293cd86d..3f6501c657e9f4bc53c936be810bea18ef2cf460 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_04/CR-Diff-04-product-1-c.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_04/CR-Diff-04-product-1-c.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Differentiate {@p@} with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the product rule <hint>calc_product_rule</hint> as follows:
@@ -17,7 +16,7 @@
\frac{d}{d{@v@}}[{@p@}] &\displaystyle =&\displaystyle \left[\frac{d}{d{@v@}}({@pp1@})\right]\cdot {@pp2@} + ({@pp1@})\cdot \left[\frac{d}{d{@v@}}[{@pp2@}]\right] \\
&\displaystyle =&\displaystyle ({@diff(pp1,v)@})\cdot {@pp2@} + ({@pp1@})\cdot {@diff(pp2,v)@} \\
&\displaystyle =&\displaystyle {@diff(p,v)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_04/CR-Diff-04-product-1-d.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_04/CR-Diff-04-product-1-d.xml
index 665720ec0da4ecf563e86928ff968bc26a3033d2..2366b21bc6358dab068139d8d593b314f2de5224 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_04/CR-Diff-04-product-1-d.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_04/CR-Diff-04-product-1-d.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Differentiate {@p@} with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the product rule <hint>calc_product_rule</hint> as follows:
@@ -17,7 +16,7 @@
\frac{d}{d{@v@}}[{@p@}] &\displaystyle =&\displaystyle \left[\frac{d}{d{@v@}}({@pp1@})\right]\cdot {@pp2@} + ({@pp1@})\cdot \left[\frac{d}{d{@v@}}[{@pp2@}]\right] \\
&\displaystyle =&\displaystyle ({@diff(pp1,v)@})\cdot {@pp2@} + ({@pp1@})\cdot {@diff(pp2,v)@} \\
&\displaystyle =&\displaystyle {@diff(p,v)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_04/CR-Diff-04-product-1-f.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_04/CR-Diff-04-product-1-f.xml
index 6e9a4f449668695b46f94f4b90e464e27a8068d7..8e5b4c36f784d0f7015c4e109bc6f9dca5d08f7b 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_04/CR-Diff-04-product-1-f.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_04/CR-Diff-04-product-1-f.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Differentiate \[\left({@pp1@}\right)\left({@pp2@}\right)\] with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the product rule <hint>calc_product_rule</hint> as follows:
@@ -17,7 +16,7 @@
\frac{d}{d{@v@}}[{@p@}] &\displaystyle =&\displaystyle \left[\frac{d}{d{@v@}}({@pp1@})\right]\cdot {@pp2@} + ({@pp1@})\cdot \left[\frac{d}{d{@v@}}[{@pp2@}]\right] \\
&\displaystyle =&\displaystyle \left({@diff(pp1,v)@}\right)\cdot {@pp2@} + \left({@pp1@}\right)\cdot {@diff(pp2,v)@} \\
&\displaystyle =&\displaystyle {@diff(p,v)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_04/CR-Diff-04-product-2-e.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_04/CR-Diff-04-product-2-e.xml
index f0c9056fc7b9557894935dace0e347e25177066b..b3fff060b60d3f01e5e06c866c5ba72caefed84d 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_04/CR-Diff-04-product-2-e.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_04/CR-Diff-04-product-2-e.xml
@@ -8,8 +8,7 @@
<text>Find the following derivative:
\[ \frac{d}{d{@v@}}[{@p@}]. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the product rule <hint>calc_product_rule</hint> as follows:
@@ -18,7 +17,7 @@
\frac{d}{d{@v@}}[{@p@}] &\displaystyle =&\displaystyle \left[\frac{d}{d{@v@}}[{@pp1@}]\right]\cdot {@pp2@} + {@pp1@}\cdot \left[\frac{d}{d{@v@}}[{@pp2@}]\right] \\
&\displaystyle =&\displaystyle {@diff(pp1,v)@}\cdot {@pp2@} + {@pp1@}\cdot [{@diff(pp2,v)@}] \\
&\displaystyle =&\displaystyle {@diff(p,v)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_04/CR-Diff-04-product-2-g.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_04/CR-Diff-04-product-2-g.xml
index 460a1ac9cab1c77c1a2254afd3ee1a12fb4f6b29..4da2a22d2849754ed3983a90f23ea54abd7ed9b2 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_04/CR-Diff-04-product-2-g.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_04/CR-Diff-04-product-2-g.xml
@@ -8,8 +8,7 @@
<text>Find the following derivative:
\[ \frac{d}{d{@v@}}[{@p@}]. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the product rule <hint>calc_product_rule</hint> as follows:
@@ -18,7 +17,7 @@
\frac{d}{d{@v@}}[{@p@}] &\displaystyle =&\displaystyle \left[\frac{d}{d{@v@}}[{@pp1@}]\right]\cdot {@pp2@} + {@pp1@}\cdot \left[\frac{d}{d{@v@}}[{@pp2@}]\right] \\
&\displaystyle =&\displaystyle {@diff(pp1,v)@}\cdot {@pp2@} + {@pp1@}\cdot [{@diff(pp2,v)@}] \\
&\displaystyle =&\displaystyle {@diff(p,v)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-1-a.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-1-a.xml
index acbd4060a883c1dd130bc8dacdd027e7d9aa5b20..9266d4da4e1368141e8b9a9b85155284e299cbe8 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-1-a.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-1-a.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Differentiate \[{@p@}\] with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the quotient rule <hint>calc_quotient_rule</hint> as follows:
@@ -19,7 +18,7 @@
&\displaystyle =&\displaystyle \frac{{@diff(pp1,v)*pp2@} - {@pp1*diff(pp2,v)@}}{({@pp2@})^2} \\
&\displaystyle =&\displaystyle \frac{@diff(pp1,v)*pp2-pp1*diff(pp2,v)@}{({@pp2@})^2} \\
&\displaystyle =&\displaystyle {@factor(diff(p,v))@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-1-b.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-1-b.xml
index da2be8cce2ae1f6a75c7b5a5be7de4c73418dd6d..6f71fd2b79b958a67e94046a978284c053d02ccd 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-1-b.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-1-b.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Differentiate \[{@p@}\] with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the quotient rule <hint>calc_quotient_rule</hint> as follows:
@@ -19,7 +18,7 @@
&\displaystyle =&\displaystyle \frac{{@diff(pp1,v)*pp2@} - {@pp1*diff(pp2,v)@}}{({@pp2@})^2} \\
&\displaystyle =&\displaystyle \frac{@diff(pp1,v)*pp2-pp1*diff(pp2,v)@}{({@pp2@})^2} \\
&\displaystyle =&\displaystyle {@factor(diff(p,v))@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-1-c.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-1-c.xml
index 38eaa5f6495be3130fbe0ff39260503efb410f91..d7de93b43c27ff590993523dcea40b8bad749d6d 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-1-c.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-1-c.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Differentiate \[{@p@}\] with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the quotient rule <hint>calc_quotient_rule</hint> as follows:
@@ -19,7 +18,7 @@
&\displaystyle =&\displaystyle \frac{{@diff(pp1,v)*pp2@} - {@pp1*diff(pp2,v)@}}{({@pp2@})^2} \\
&\displaystyle =&\displaystyle \frac{@diff(pp1,v)*pp2-pp1*diff(pp2,v)@}{({@pp2@})^2} \\
&\displaystyle =&\displaystyle {@factor(diff(p,v))@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-1-d.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-1-d.xml
index a800c67171e3963a4eec6c43e4535ec0ec428769..56cdf4ffcf768c6be1790bc56159f9f0fdb3895a 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-1-d.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-1-d.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Differentiate \[{@p@}\] with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the quotient rule <hint>calc_quotient_rule</hint> as follows:
@@ -19,7 +18,7 @@
&\displaystyle =&\displaystyle \frac{{@diff(pp1,v)*pp2@} - {@pp1*diff(pp2,v)@}}{({@pp2@})^2} \\
&\displaystyle =&\displaystyle \frac{@diff(pp1,v)*pp2-pp1*diff(pp2,v)@}{({@pp2@})^2} \\
&\displaystyle =&\displaystyle {@factor(diff(p,v))@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-1-e.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-1-e.xml
index 30a09709633deb2a402b52e97d7d2e5ed3eb556a..dd4b46c432f4072a7b448fa7fdddaa16907b3dd1 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-1-e.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-1-e.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Differentiate \[{@p@}\] with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the quotient rule <hint>calc_quotient_rule</hint> as follows:
@@ -19,7 +18,7 @@
&\displaystyle =&\displaystyle \frac{{@diff(pp1,v)*pp2@} - {@pp1*diff(pp2,v)@}}{({@pp2@})^2} \\
&\displaystyle =&\displaystyle \frac{@diff(pp1,v)*pp2-pp1*diff(pp2,v)@}{({@pp2@})^2} \\
&\displaystyle =&\displaystyle {@factor(diff(p,v))@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-2-a.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-2-a.xml
index f8d3e11621beb8255e4764d623708624acb28339..48dfc1644ec220e2b5c29eb93d719439f747722f 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-2-a.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-2-a.xml
@@ -8,8 +8,7 @@
<text>Find the following derivative:
\[ \frac{d}{d{@v@}}\left[{@p@}\right]. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the quotient rule <hint>calc_quotient_rule</hint> as follows:
@@ -18,7 +17,7 @@
\frac{d}{d{@v@}}\left[{@p@}\right] &\displaystyle =&\displaystyle \frac{\left[\frac{d}{d{@v@}}({@pp1@})\right]\cdot {@pp2@} - {@pp1@}\cdot \left[\frac{d}{d{@v@}}[{@pp2@}]\right]}{[{@pp2@}]^2} \\
&\displaystyle =&\displaystyle \frac{[{@diff(pp1,v)@}]\cdot {@pp2@} - {@pp1@}\cdot [{@diff(pp2,v)@}]}{@pp2^2@} \\
&\displaystyle =&\displaystyle \frac{{@factor(diff(pp1,v))*pp2@} - {@pp1*factor(diff(pp2,v))@}}{@pp2^2@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-2-b.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-2-b.xml
index 6ac12771a6fb2c8beebef8d1426aaf2779660157..ed54942b0b6fea523dae7b3fc58d77d4596a21c6 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-2-b.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-2-b.xml
@@ -8,8 +8,7 @@
<text>Find the following derivative:
\[ \frac{d}{d{@v@}}\left[{@p@}\right]. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the quotient rule <hint>calc_quotient_rule</hint> as follows:
@@ -20,7 +19,7 @@
&\displaystyle =&\displaystyle \frac{{@factor(diff(pp1,v))*pp2@} - {@pp1*factor(diff(pp2,v))@}}{@pp2^2@} \\
&\displaystyle =&\displaystyle \frac{@factor(factor(diff(pp1,v))*pp2-pp1*factor(diff(pp2,v)))@}{@pp2^2@} \\
&\displaystyle =&\displaystyle {@factor(diff(p,v))@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-2-d.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-2-d.xml
index 24b800fdd997a341f84c430264779c031ae850f8..804d4debfc478e3344324fb20022a10d02eb9aac 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-2-d.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-2-d.xml
@@ -8,8 +8,7 @@
<text>Find the following derivative:
\[ \frac{d}{d{@v@}}\left[{@p@}\right]. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the quotient rule <hint>calc_quotient_rule</hint> as follows:
@@ -19,7 +18,7 @@
&\displaystyle =&\displaystyle \frac{[{@diff(pp1,v)@}]\cdot {@pp2@} - {@pp1@}\cdot [{@diff(pp2,v)@}]}{@pp2^2@} \\
&\displaystyle =&\displaystyle \frac{{@factor(diff(pp1,v))*pp2@} - {@pp1*factor(diff(pp2,v))@}}{@pp2^2@}\\
&\displaystyle =&\displaystyle {@ratsimp(diff(p,v))@}.
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-2-e.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-2-e.xml
index 6b8985c21ae8ba70b1de0df31f6732f3ad53aea9..329136fe394af7e85666ddf62920c0edf5305eb0 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-2-e.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-2-e.xml
@@ -8,8 +8,7 @@
<text>Find the following derivative:
\[ \frac{d}{d{@v@}}\left[{@p@}\right]. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the quotient rule <hint>calc_quotient_rule</hint> as follows:
@@ -20,7 +19,7 @@
&\displaystyle =&\displaystyle \frac{{@factor(diff(pp1,v))*pp2@} - {@pp1*factor(diff(pp2,v))@}}{@pp2^2@} \\
&\displaystyle =&\displaystyle \frac{@factor(factor(diff(pp1,v))*pp2-pp1*factor(diff(pp2,v)))@}{@pp2^2@} \\
&\displaystyle =&\displaystyle {@factor(diff(p,v))@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-3-a.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-3-a.xml
index 152956b1a7c03e378fdbf7323850af2d55be8d58..790ae0fbde954d9782d05668e3fd7b1d5f208a37 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-3-a.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-3-a.xml
@@ -8,8 +8,7 @@
<text>Find the following derivative:
\[ \frac{d}{d{@v@}}\left[{@p@}\right]. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the quotient rule <hint>calc_quotient_rule</hint> as follows:
@@ -20,7 +19,7 @@
&\displaystyle =&\displaystyle \frac{{@factor(diff(pp1,v))*pp2@} - {@pp1*factor(diff(pp2,v))@}}{@pp2^2@} \\
&\displaystyle =&\displaystyle \frac{@factor(factor(diff(pp1,v))*pp2-pp1*factor(diff(pp2,v)))@}{@pp2^2@} \\
&\displaystyle =&\displaystyle {@factor(diff(p,v))@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-3-b.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-3-b.xml
index 24d2bf061132c556909300a29ea969e4b2bb4b62..cfc3ba0be1914276db444bcb0f71b99efac24c1d 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-3-b.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-3-b.xml
@@ -8,8 +8,7 @@
<text>Find the following derivative:
\[ \frac{d}{d{@v@}}\left[{@p@}\right]. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the quotient rule <hint>calc_quotient_rule</hint> as follows:
@@ -20,7 +19,7 @@
&\displaystyle =&\displaystyle \frac{{@factor(diff(pp1,v))*pp2@} - {@pp1*factor(diff(pp2,v))@}}{@pp2^2@} \\
&\displaystyle =&\displaystyle \frac{@factor(factor(diff(pp1,v))*pp2-pp1*factor(diff(pp2,v)))@}{@pp2^2@} \\
&\displaystyle =&\displaystyle {@factor(diff(p,v))@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-3-c.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-3-c.xml
index fcf4dc4c09c2cb241ae3ee93028e2a969c137da0..78a53541498b6b7830bcd6422007d62387b343f9 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-3-c.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-3-c.xml
@@ -8,8 +8,7 @@
<text>Find the following derivative:
\[ \frac{d}{d{@v@}}\left[{@p@}\right]. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the quotient rule <hint>calc_quotient_rule</hint> as follows:
@@ -20,7 +19,7 @@
&\displaystyle =&\displaystyle \frac{{@factor(diff(pp1,v))*pp2@} - {@pp1*factor(diff(pp2,v))@}}{@pp2^2@} \\
&\displaystyle =&\displaystyle \frac{@factor(factor(diff(pp1,v))*pp2-pp1*factor(diff(pp2,v)))@}{@pp2^2@} \\
&\displaystyle =&\displaystyle {@factor(diff(p,v))@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-3-d.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-3-d.xml
index f0e345de8189a5a6e62568801637ed2133260058..41b4fbd03435ce924e4b775a850e1b5ec796051c 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-3-d.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_05/CR-Diff-05-quotient-3-d.xml
@@ -8,8 +8,7 @@
<text>Find the following derivative:
\[ \frac{d}{d{@v@}}\left[{@p@}\right]. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the quotient rule <hint>calc_quotient_rule</hint> as follows:
@@ -20,7 +19,7 @@
&\displaystyle =&\displaystyle \frac{{@factor(diff(pp1,v))*pp2@} - {@pp1*factor(diff(pp2,v))@}}{@pp2^2@} \\
&\displaystyle =&\displaystyle \frac{@factor(factor(diff(pp1,v))*pp2-pp1*factor(diff(pp2,v)))@}{@pp2^2@} \\
&\displaystyle =&\displaystyle {@factor(diff(p,v))@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-1-a.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-1-a.xml
index 49c7f468648cd1639e7c737c524a58307829f636..d6e695d452b10f556fbc0310264fd784e90df887 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-1-a.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-1-a.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Differentiate {@p@} with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the chain rule <hint>calc_chain_rule</hint> as follows:
@@ -23,7 +22,7 @@ So \(f({@v@})=g({@v@})^{@rdm3@}\). So,
&\displaystyle =&\displaystyle {@rdm3@}g^{{@rdm3@}-1}\cdot {@rdm2@} \\
&\displaystyle =&\displaystyle {@rdm3*rdm2@}({@pp@})^{@rdm3-1@} \\
&\displaystyle =&\displaystyle {@diff(p,v)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-1-b.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-1-b.xml
index 366395b6cd344a9a87494342b479d9bb6c9978dc..8da5b12abcd41c9fae8dd5b2c1961fcb197673b9 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-1-b.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-1-b.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Differentiate {@p@} with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the chain rule <hint>calc_chain_rule</hint> as follows:
@@ -23,7 +22,7 @@ So \(f({@v@})=g({@v@})^{@rdm2@}\). So,
&\displaystyle =&\displaystyle {@rdm2@}g^{{@rdm2@}-1}\cdot (-{@rdm1@}){@v@}^{{@rdm1@}-1} \\
&\displaystyle =&\displaystyle -{@rdm1*rdm2@}{@v@}^{@rdm1-1@}({@pp@})^{@rdm2-1@} \\
&\displaystyle =&\displaystyle -{@rdm1*rdm2*v^(rdm1-1)*pp^(rdm2-1)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-1-c.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-1-c.xml
index f1f7c9df7a296c9e7644249d5f856748db5700b0..43b6d9768a1cc46e60a9de19a63e136e725324fb 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-1-c.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-1-c.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Differentiate \[{@p@}\] with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the chain rule <hint>calc_chain_rule</hint> as follows:
@@ -23,7 +22,7 @@ So \(f({@v@})=g({@v@})^{@rdm3@}\). So,
&\displaystyle =&\displaystyle {@rdm3@}g^{{@rdm3@}-1}\cdot {@rdm2@} \\
&\displaystyle =&\displaystyle {@rdm3*rdm2@}({@pp@})^{@rdm3-1@} \\
&\displaystyle =&\displaystyle {@diff(p,v)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-1-d.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-1-d.xml
index 2a19aeb4daa78cf2c42522751220c947bae9296d..00594b58b4c1501ea9a934c20298c3db7d111c7d 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-1-d.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-1-d.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Differentiate {@p@} with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the chain rule <hint>calc_chain_rule</hint> as follows:
@@ -23,7 +22,7 @@ So \(f({@v@})=g({@v@})^{@rdm3@}\). So,
&\displaystyle =&\displaystyle {@rdm3@}g^{{@rdm3@}-1}\cdot {@rdm2@} \\
&\displaystyle =&\displaystyle {@rdm3*rdm2@}({@pp@})^{@rdm3-1@} \\
&\displaystyle =&\displaystyle {@diff(p,v)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-1-f.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-1-f.xml
index 60408867e1d620c708411f1af16dbee214e027d9..947a430847de14189554aef838171585c230b2fe 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-1-f.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-1-f.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Differentiate {@p@} with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the chain rule <hint>calc_chain_rule</hint> as follows:
@@ -23,7 +22,7 @@ So \(f({@v@})=g({@v@})^{@rdm3@}\). So,
&\displaystyle =&\displaystyle {@rdm3@}g^{{@rdm3@}-1}\cdot {@diff(pp,v)@} \\
&\displaystyle =&\displaystyle {@rdm3@}({@pp@})^{@rdm3-1@}[{@diff(pp,v)@}] \\
&\displaystyle =&\displaystyle {@diff(p,v)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-1-h.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-1-h.xml
index c0e0bb2c9cde460461c88b79c1beb4d861bfac1d..a83aca2f8af4a0209c539c418653c71403fc71d3 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-1-h.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-1-h.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Differentiate \[{@p@}\] with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the chain rule <hint>calc_chain_rule</hint> as follows:
@@ -23,7 +22,7 @@ So \(f({@v@})=g({@v@})^{@rdm3@}\). So,
&\displaystyle =&\displaystyle {@rdm3@}g^{{@rdm3@}-1}\cdot {@diff(pp,v)@} \\
&\displaystyle =&\displaystyle {@rdm3@}({@pp@})^{@rdm3-1@}[{@diff(pp,v)@}] \\
&\displaystyle =&\displaystyle {@diff(p,v)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-2-a.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-2-a.xml
index d478c5da6649162ee37d46495cdfa4b57b366516..45af7f1ff0dbd199fdd02ecec334f335f8e8c4fd 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-2-a.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-2-a.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Differentiate {@p@} with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the chain rule <hint>calc_chain_rule</hint> as follows:
@@ -23,7 +22,7 @@ So \(f({@v@})=g({@v@})^{@rdm3@}\). So,
&\displaystyle =&\displaystyle {@rdm3@}g^{{@rdm3@}-1}\cdot {@diff(pp,v)@} \\
&\displaystyle =&\displaystyle {@rdm3@}({@pp@})^{@rdm3-1@}[{@diff(pp,v)@}] \\
&\displaystyle =&\displaystyle {@diff(p,v)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-2-b.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-2-b.xml
index 12f9cde808aae86642559e4a38c9f4b2d290c3cf..b867e181b254b8dc90446c518c77a12f3bb8bfe5 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-2-b.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-2-b.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Differentiate {@p@} with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the chain rule <hint>calc_chain_rule</hint> as follows:
@@ -23,7 +22,7 @@ So \(f({@v@})=sin(g({@v@}))\). So,
&\displaystyle =&\displaystyle {@diff(sin(g),g)@}\cdot {@diff(pp,v)@} \\
&\displaystyle =&\displaystyle [{@subst(pp,g,diff(sin(g),g))@}][{@diff(pp,v)@}] \\
&\displaystyle =&\displaystyle {@diff(p,v)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-2-d.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-2-d.xml
index cbf3ebc5228c44565125e82d4c6413d0437f14da..1d3d903b3b446b5caf3f67c2c267f08427494d5e 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-2-d.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-2-d.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Differentiate {@p@} with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the chain rule <hint>calc_chain_rule</hint> as follows:
@@ -23,7 +22,7 @@ So \(f({@v@})=(g({@v@}))^{@rdm3@}\). So,
&\displaystyle =&\displaystyle {@diff(tan(g),g)@}\cdot {@diff(pp,v)@} \\
&\displaystyle =&\displaystyle [{@subst(pp,g,diff(tan(g),g))@}][{@diff(pp,v)@}] \\
&\displaystyle =&\displaystyle {@diff(p,v)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-2-e.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-2-e.xml
index be277becbe3d77eb09c9bd01d5a8d892974f302c..2264b488031c774603c71e974a9b1c2b5e1ea606 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-2-e.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-2-e.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Differentiate {@p@} with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the chain rule <hint>calc_chain_rule</hint> as follows:
@@ -23,7 +22,7 @@ So \(f({@v@})=(g({@v@}))^{@rdm3@}\). So,
&\displaystyle =&\displaystyle {@diff((g)^rdm3,g)@}\cdot {@diff(pp,v)@} \\
&\displaystyle =&\displaystyle [{@subst(pp,g,diff((g)^rdm3,g))@}][{@diff(pp,v)@}] \\
&\displaystyle =&\displaystyle {@diff(p,v)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-2-f.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-2-f.xml
index f2e51b1bf4f3e448f2443ee70cf1a52e99d6057e..998d4b483df8f93e0cda4bb623e8bbc9f722eafc 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-2-f.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-2-f.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Differentiate \[{@p@}\] with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the chain rule <hint>calc_chain_rule</hint> as follows:
@@ -23,7 +22,7 @@ So \(f({@v@})=(g({@v@}))^{@rdm3@}\). So,
&\displaystyle =&\displaystyle {@diff((g)^rdm3,g)@}\cdot {@diff(pp,v)@} \\
&\displaystyle =&\displaystyle \left[{@subst(pp,g,diff((g)^rdm3,g))@}\right][{@diff(pp,v)@}] \\
&\displaystyle =&\displaystyle {@diff(p,v)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-3-a.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-3-a.xml
index 000abe1db4d245155185e85be7ed64d4b161a0b1..af84b26cdf033cdb4057887564aa62e2b0403d4c 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-3-a.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-3-a.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Differentiate {@p@} with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the chain rule <hint>calc_chain_rule</hint> as follows:
@@ -23,7 +22,7 @@ So \[f({@v@})=e^{g({@v@})}\]. So,
&\displaystyle =&\displaystyle {@diff(exp(g),g)@}\cdot {@diff(pp,v)@} \\
&\displaystyle =&\displaystyle \left[{@subst(pp,g,diff(exp(g),g))@}\right][{@diff(pp,v)@}] \\
&\displaystyle =&\displaystyle {@diff(p,v)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-3-b.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-3-b.xml
index 90d08d0d723cb21642d6d9e710a644aa485b71fe..8b10db9cd473f1c9530ad16e3dec2e181e749021 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-3-b.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-3-b.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Differentiate {@p@} with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the chain rule <hint>calc_chain_rule</hint> as follows:
@@ -23,7 +22,7 @@ So \[f({@v@})=e^{(g({@v@}))}\]. So,
&\displaystyle =&\displaystyle {@diff(exp(g),g)@}\cdot {@diff(pp,v)@} \\
&\displaystyle =&\displaystyle [{@subst(pp,g,diff(exp(g),g))@}][{@diff(pp,v)@}] \\
&\displaystyle =&\displaystyle {@diff(p,v)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-3-c.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-3-c.xml
index c4cedece3b3e0324a1cf3cefe7097f3066b09f4a..50bee807cde50515f88b28cc46043d52c1a9d4d5 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-3-c.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-3-c.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Differentiate {@p@} with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the chain rule <hint>calc_chain_rule</hint> as follows:
@@ -23,7 +22,7 @@ So \(f({@v@})=cos(g({@v@}))\). So,
&\displaystyle =&\displaystyle {@diff(cos(g),g)@}\cdot {@diff(pp,v)@} \\
&\displaystyle =&\displaystyle [{@subst(pp,g,diff(cos(g),g))@}][{@diff(pp,v)@}] \\
&\displaystyle =&\displaystyle {@diff(p,v)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-3-d.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-3-d.xml
index 47b5365c485828cc9673a5188f52021fe2c43b8c..a4a463870c644f604da15e3e25593f29c34146f2 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-3-d.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-3-d.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Differentiate {@p@} with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the chain rule <hint>calc_chain_rule</hint> as follows:
@@ -23,7 +22,7 @@ So \(f({@v@})=ln(g({@v@}))\). So,
&\displaystyle =&\displaystyle {@diff(log(g),g)@}\cdot {@diff(pp,v)@} \\
&\displaystyle =&\displaystyle \left[{@subst(pp,g,diff(log(g),g))@}\right][{@diff(pp,v)@}] \\
&\displaystyle =&\displaystyle {@diff(p,v)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-3-e.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-3-e.xml
index 4ecab020944bffa6ce34f8a87583584986abf1f3..2c4290d30e256c526c91a55c9f032fc0976da207 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-3-e.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-3-e.xml
@@ -8,8 +8,7 @@
<text>Find the following derivative:
\[ \frac{d}{d{@v@}}[{@p@}]. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the chain rule <hint>calc_chain_rule</hint> as follows:
@@ -23,7 +22,7 @@ Then \(f({@v@})=sin[g({@v@})]\). So,
&\displaystyle =&\displaystyle \frac{d}{dg}[sin(g)]\cdot \frac{d}{d{@v@}}[{@pp@}] \\
&\displaystyle =&\displaystyle {@diff(sin(g),g)@}\cdot \frac{@rdm@}{{@rdm@} {@v@}} \\
&\displaystyle =&\displaystyle {@diff(p,v)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-3-f.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-3-f.xml
index 2b830006f497d8f36a6347344129037d930a18c6..99df3331d86d191d1f9af44c54a9eb46fb2e2980 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-3-f.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_06/CR-Diff-06-chain-3-f.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Differentiate {@p@} with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the chain rule <hint>calc_chain_rule</hint> as follows:
@@ -23,7 +22,7 @@ So \(f({@v@})=ln(g({@v@}))\). So,
&\displaystyle =&\displaystyle {@diff(log(g),g)@}\cdot {@diff(pp,v)@} \\
&\displaystyle =&\displaystyle \left[{@subst(pp,g,diff(log(g),g))@}\right][{@diff(pp,v)@}] \\
&\displaystyle =&\displaystyle {@diff(p,v)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_07/CR-Diff-07-implicit-1-a.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_07/CR-Diff-07-implicit-1-a.xml
index 70bc474ff6c4de6b28095b5c59a4df6cff7b0ee0..8f9d5c8970474a70ea762737a1bd6bee0b901b54 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_07/CR-Diff-07-implicit-1-a.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_07/CR-Diff-07-implicit-1-a.xml
@@ -9,8 +9,7 @@
\[x = {@p@}\]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text/>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_07/CR-Diff-07-implicit-1-b.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_07/CR-Diff-07-implicit-1-b.xml
index 78247f5181b8edd2a387830a50b68dd198d0626e..d449631ce836d9b64709c62dbab0e6db2bfd398e 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_07/CR-Diff-07-implicit-1-b.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_07/CR-Diff-07-implicit-1-b.xml
@@ -9,8 +9,7 @@
\[x = {@p@}\]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[\[x={@p@}\] So,
@@ -22,7 +21,7 @@
\[\begin{array}{rcl}\displaystyle
\frac{d{@v@}}{dx} &\displaystyle =&\displaystyle \frac{1}{2{@v@} -\frac{1}{{@v@}^2}} \\
&\displaystyle =&\displaystyle \frac{{@v@}^2}{2{@v@}^3+1}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_07/CR-Diff-07-implicit-1-c.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_07/CR-Diff-07-implicit-1-c.xml
index 2e7b4a821f8c0562897dad5e135971d218dadec8..a8f46c831db2c9005c83063ff78c62158a83e8d9 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_07/CR-Diff-07-implicit-1-c.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_07/CR-Diff-07-implicit-1-c.xml
@@ -9,8 +9,7 @@
\[x = {@p@}\]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text/>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_07/CR-Diff-07-implicit-2-a.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_07/CR-Diff-07-implicit-2-a.xml
index 8c4a02fb82067ccf1adc50e044135934129127ca..14bdce3773ef8cde7a3dadc2648dee8e35179d94 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_07/CR-Diff-07-implicit-2-a.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_07/CR-Diff-07-implicit-2-a.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Find \(\frac{dy}{dx}\) where \({@p@}=0\) using implicit differentiation.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text>Differentiating implicitly we obtain:
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_07/CR-Diff-07-implicit-2-b.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_07/CR-Diff-07-implicit-2-b.xml
index 3f478656d4821b7df9dccace1717c162bccfecde..f5a44b887bccd8b0afe0e649df956b3c0ce5e012 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_07/CR-Diff-07-implicit-2-b.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_07/CR-Diff-07-implicit-2-b.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Find \(\frac{dy}{dx}\) where \({@p@}=0\) using implicit differentiation.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text>\[y^2-y+x^2+x=0\] So,
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_07/CR-Diff-07-implicit-2-e.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_07/CR-Diff-07-implicit-2-e.xml
index 32653f62832f2e0e6f24ceb00ffdb4d3c79b8016..1996f2a5b231a951fc4d395a568c614cad1222d2 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_07/CR-Diff-07-implicit-2-e.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_07/CR-Diff-07-implicit-2-e.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Find \(\frac{dy}{dx}\) where \({@p@}=0\) using implicit differentiation.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text>Differentiating implicity with respect to x we obtain:
@@ -16,7 +15,7 @@
\[ \frac{dy}{dx}\left({@exp(y)-1/y@}\right) = {@1/x-1@}. \]
\[\frac{dy}{dx} = {@(1/x-1)/(exp(y)-1/y)@}. \]
Rationalising and factorising gives:
-\[\frac{dy}{dx} = {@ans@}.\] </text>
+\[\frac{dy}{dx} = {@ans@}.\]</text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_08/CR-Diff-08-parametrical-1-d.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_08/CR-Diff-08-parametrical-1-d.xml
index a33c632fc903fe58c3369cc77e6c515cd7102ea7..8d102444f33d72e2062c22ea581c04c3619a3367 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_08/CR-Diff-08-parametrical-1-d.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_08/CR-Diff-08-parametrical-1-d.xml
@@ -20,8 +20,7 @@
<questionvariables>
<text>v:t;
x:log(t)+t;
-y:t-log(t);
-</text>
+y:t-log(t);</text>
</questionvariables>
<specificfeedback format="html">
<text><![CDATA[<p>[[feedback:Result]]</p>]]></text>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_08/CR-Diff-08-parametrical-2-b.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_08/CR-Diff-08-parametrical-2-b.xml
index 47c68c5e996388c8cab1b7ebbd4d96a455d6dcdf..a68bed2e27db7e9c5fd3981d82f1bebd40e27e48 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_08/CR-Diff-08-parametrical-2-b.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_08/CR-Diff-08-parametrical-2-b.xml
@@ -22,8 +22,7 @@
rdm1:2+rand(4);
rdm2:2+rand(4);
x:cos(rdm1*v);
-y:tan(rdm2*v);
-</text>
+y:tan(rdm2*v);</text>
</questionvariables>
<specificfeedback format="html">
<text><![CDATA[<p>[[feedback:Result]]</p>]]></text>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_09/CR-Diff-09-misc-2-b.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_09/CR-Diff-09-misc-2-b.xml
index 4e3398b24b1909771ef706f038396437e3fdfd5a..24f2e6ac54e72905def2a21885abd03219239839 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_09/CR-Diff-09-misc-2-b.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_09/CR-Diff-09-misc-2-b.xml
@@ -8,8 +8,7 @@
<text>Find the following derivative:
\[ \frac{d}{d{@v@}}\left( {@p@}\right). \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[To solve this problem you will need to use the product rule <hint>calc_product_rule</hint> and the quotient rule<hint>calc_quotient_rule</hint>.
@@ -35,7 +34,7 @@ Hence,
&\displaystyle =&\displaystyle \frac{[{@diff(p1,v)@}]{@p2@} - {@p1@}[{@diff(p2,v)@}]}{[{@p2@}]^2} \\
&\displaystyle =&\displaystyle \frac{{@diff(p1,v)*p2@} - {@p1*diff(p2,v)@}}{@p2^2@} \\
&\displaystyle =&\displaystyle {@factor(diff(p,v))@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_09/CR-Diff-09-misc-2-c.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_09/CR-Diff-09-misc-2-c.xml
index 025ea864695b0500d410cd7b46ba89cf987b2e85..d950989d049095707d8f5c22d2bae90d536316a7 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_09/CR-Diff-09-misc-2-c.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_09/CR-Diff-09-misc-2-c.xml
@@ -27,8 +27,7 @@ pp1:ppp1*ppp2;
pp2:tan(rdm1*v);
p:pp1/pp2;
p2:cos(rdm1*v)*cos(rdm2*v)
-ta:diff(p2,v);
-</text>
+ta:diff(p2,v);</text>
</questionvariables>
<specificfeedback format="html">
<text><![CDATA[<p>[[feedback:Result]]</p>]]></text>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_09/CR-Diff-09-misc-4-b.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_09/CR-Diff-09-misc-4-b.xml
index ad4fa3b188889a49b8a720b73e8e48baece77705..3fe28faf43351ae94d9bd6b23fae59afcc197e51 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_09/CR-Diff-09-misc-4-b.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_09/CR-Diff-09-misc-4-b.xml
@@ -8,8 +8,7 @@
<text>Find the following derivative:
\[ \frac{d}{d{@v@}}[{@p@}]. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[To solve this question, you will have to use the chain rule <hint>calc_chain_rule</hint> more than once.
@@ -37,8 +36,7 @@ So,
&\displaystyle =&\displaystyle e^g \cdot {@diff(pp,v)@} \\
&\displaystyle =&\displaystyle e^{@pp@}{@diff(pp,v)@} \\
&\displaystyle =&\displaystyle {@diff(p,v)@}
- \end{array}\]
-]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_09/CR-Diff-09-misc-5-b.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_09/CR-Diff-09-misc-5-b.xml
index 58d9fb13018a6ab648348b7d4590ee47fa85bb1d..09423a8207f9d532eeaa79d048f0f2d569fe5938 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_09/CR-Diff-09-misc-5-b.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Diff_09/CR-Diff-09-misc-5-b.xml
@@ -8,8 +8,7 @@
<text>Find the following second derivative:
\[ \frac{d^2}{d{@v@}^2}({@p@}). \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[For this question, note that the second derivative of a function is the derivative of the first derivative of that function, that is,
@@ -26,9 +25,7 @@ So, to calculate the second derivative of {@p@} with respect to {@v@}, you have
&\displaystyle =&\displaystyle \frac{d}{d{@v@}}({@diff(p,v)@}) \\
&\displaystyle =&\displaystyle \left[ \frac{d}{d{@v@}}({@diff(pp,v)@})\right]\cdot {@p@} + {@diff(pp,v)@}\cdot \left[\frac{d}{d{@v@}}({@p@})\right] \\
&\displaystyle =&\displaystyle {@diff(pp,v,2)*p@} + {@diff(pp,v)*diff(p,v)@}
- \end{array}\]
-
-]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-1-b.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-1-b.xml
index dafcfc62c3114a3efd4bf97057dfe83b88e9c269..60a60feed1fbcf1a85754fd1b1eacc3ebb48b3fa 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-1-b.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-1-b.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Integrate \[{@p@}\] with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[To solve this problem we will have to use the linearity rules for integration <hint>calc_int_linearity_rule</hint> as follows:
@@ -17,7 +16,7 @@
\int \left({@p@}\right) d{@v@} &\displaystyle =&\displaystyle {@rdm1@}\int {@ppp1@} d{@v@} \\
&\displaystyle =&\displaystyle {@rdm1@}[{@int(ppp1,v)@}] \\
&\displaystyle =&\displaystyle {@int(p,v)@} + c
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-1-c.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-1-c.xml
index 11cb41354f08e08ec2e8347d17a5541f55b79cbb..3906378289f3a1c96c71683202ce2b76b52a286e 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-1-c.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-1-c.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Integrate \[{@p@}\] with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[To solve this problem we will have to use the linearity rules for integration <hint>calc_int_linearity_rule</hint> as follows:
@@ -17,7 +16,7 @@
\int \left({@p@}\right) d{@v@} &\displaystyle =&\displaystyle \int {@pp1@} d{@v@} - \int {@pp2@} d{@v@} \\
&\displaystyle =&\displaystyle {@int(ppp1,v)@} - {@int(ppp2,v)@} + c \\
&\displaystyle =&\displaystyle {@int(p,v)@} + c
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-1-d.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-1-d.xml
index 6ba42910344c4dffa4547aad4b859cb314a31435..f27c59ed6a0e7fc22a8d581abbc65c7f90792ed7 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-1-d.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-1-d.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Integrate \[{@p@}\] with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[To solve this problem we will have to use the linearity rules for integration <hint>calc_int_linearity_rule</hint> as follows:
@@ -17,7 +16,7 @@
\int \left({@p@}\right) d{@v@} &\displaystyle =&\displaystyle {@rdm1@}\int {@ppp1@} d{@v@} \\
&\displaystyle =&\displaystyle {@rdm1@}[{@int(ppp1,v)@}] \\
&\displaystyle =&\displaystyle {@int(p,v)@} + c
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-1-e.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-1-e.xml
index b3c1ae677210ef5383e099010f830d0f6f73ae70..697dcd09ee62d07d5d7ef1c58236b8c7fed5bb6c 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-1-e.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-1-e.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Integrate \[{@p@}\] with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[To solve this problem we will have to use the linearity rules for integration <hint>calc_int_linearity_rule</hint> as follows:
@@ -17,7 +16,7 @@
\int \left({@p@}\right) d{@v@} &\displaystyle =&\displaystyle \int {@pp1@} d{@v@} - \int {@pp2@} d{@v@} \\
&\displaystyle =&\displaystyle {@int(ppp1,v)@} - {@int(ppp2,v)@} + c \\
&\displaystyle =&\displaystyle {@int(p,v)@} + c
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-1-h.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-1-h.xml
index 3ad855d987847e2ce0c70edb0d54689e8addee0b..f3428979eb8d00ada2e5cc2d4534ada55027ced1 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-1-h.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-1-h.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Integrate \[{@p@}\] with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[To solve this problem we will have to use the linearity rules for integration <hint>calc_int_linearity_rule</hint> as follows:
@@ -17,7 +16,7 @@
\int \left({@p@}\right) d{@v@} &\displaystyle =&\displaystyle {@rdm1@}\int {@ppp1@} d{@v@} \\
&\displaystyle =&\displaystyle {@rdm1@}[{@int(ppp1,v)@}] \\
&\displaystyle =&\displaystyle {@int(p,v)@} + c
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-1-k.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-1-k.xml
index c86ef19bd2d878bbb897e01bdf86b49f2bbdd665..492469bc191d19ba41fc1e800b43607117af13b6 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-1-k.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-1-k.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Integrate \[{@p@}\] with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[To solve this problem we will have to use the linearity rules for integration <hint>calc_int_linearity_rule</hint> as follows:
@@ -18,7 +17,7 @@
&\displaystyle =&\displaystyle {@rdm@}\int {@ppp1@} d{@v@} - {@rdm@}\int {@ppp2@} d{@v@} \\
&\displaystyle =&\displaystyle {@rdm@}{@int(ppp1,v)@} - {@rdm@}{@int(ppp2,v)@} + c \\
&\displaystyle =&\displaystyle {@int(p,v)@} + c
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-2-a.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-2-a.xml
index c0b97596bb565c5b82906ee3490aa1adc96ec9d8..1bd6cfd054ce2cccaba104d68a05ad9f0451d434 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-2-a.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-2-a.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Integrate {@p@} with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[To solve this problem we will have to use the linearity rules for integration <hint>calc_int_linearity_rule</hint> as follows:
@@ -18,7 +17,7 @@
&\displaystyle =&\displaystyle {@rdm1@}\int {@ppp1@} d{@v@} + \int {@ppp2@} d{@v@} \\
&\displaystyle =&\displaystyle {@rdm1@}\left[{@int(ppp1,v)@}\right] + \left[{@int(ppp2,v)@}\right] + c \\
&\displaystyle =&\displaystyle {@int(p,v)@} + c
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-2-d.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-2-d.xml
index da8e126a2da9776bd7b7e91d5233addb6353bd01..ed2b3e551eb8dbe88df2975e202021092d8eebdc 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-2-d.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-2-d.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Integrate {@p@} with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[To solve this problem we will have to use the linearity rules for integration <hint>calc_int_linearity_rule</hint> as follows:
@@ -18,7 +17,7 @@
&\displaystyle =&\displaystyle {@rdm1@}\int {@ppp1@} d{@v@} + \int {@ppp2@} d{@v@} \\
&\displaystyle =&\displaystyle {@rdm1@}\left[{@int(ppp1,v)@}\right] + \left[{@int(ppp2,v)@}\right] + c \\
&\displaystyle =&\displaystyle {@int(p,v)@} + c
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-2-f.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-2-f.xml
index e3d46e12a49d66ab0dbafcbedd916206f8c679b5..620a95576569ee7994c5ebf75e8d695945c2a7b7 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-2-f.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-2-f.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Integrate {@p@} with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[To solve this problem we will have to use the linearity rules for integration <hint>calc_int_linearity_rule</hint> as follows:
@@ -18,7 +17,7 @@
&\displaystyle =&\displaystyle {@rdm1@}\int {@ppp1@} d{@v@} + {@rdm2@}\int {@ppp2@} d{@v@} \\
&\displaystyle =&\displaystyle {@rdm1@}\left[{@int(ppp1,v)@}\right] + {@rdm2@}\left[{@int(ppp2,v)@}\right] + c \\
&\displaystyle =&\displaystyle {@int(p,v)@} + c
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-2-l.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-2-l.xml
index a90ac0a8492208999c116af292db1843614ef141..dbcc98802cdef6e5edac5d1f53fb93eca6b715b9 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-2-l.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-2-l.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Integrate \[{@p@}\] with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[To solve this problem we will have to use the linearity rules for integration <hint>calc_int_linearity_rule</hint> as follows:
@@ -18,7 +17,7 @@
&\displaystyle =&\displaystyle {@rdm1@}\int {@ppp1@} d{@v@} + \int {@ppp2@} d{@v@} \\
&\displaystyle =&\displaystyle {@rdm1@}\left[{@int(ppp1,v)@}\right] + \left[{@int(ppp2,v)@}\right] + c \\
&\displaystyle =&\displaystyle {@int(p,v)@} + c
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-3-e.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-3-e.xml
index 4cb92a539085e2d0f40139f070d29885a51df581..29b5fba5defe9dc2ea55f11814b37f61878eb0bb 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-3-e.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-3-e.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Simplify and integrate {@p@} with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[Using the distributive law and the properties of exponentials <hint>alg_indices</hint> we get that
@@ -24,7 +23,7 @@ So, using linearity in integration <hint>calc_int_linearity_rule</hint>,
&\displaystyle =&\displaystyle \int {@pp2*ppp1@} d{@v@} - \int {@pp2*ppp2@} d{@v@} \\
&\displaystyle =&\displaystyle {@int(pp2*ppp1,v)@} - {@int(pp2*ppp2,v)@} + c \\
&\displaystyle =&\displaystyle {@int(p,v)@} + c
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-3-f.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-3-f.xml
index 21a27ef0463e5e0241c9e1451f54145c9b09c4aa..6be5efdd74883c2a8e44ba5afc718eec2a752301 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-3-f.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_11/CR-Int-11-linearity-3-f.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Simplify and integrate \[\frac{@pp1@}{@pp2@}\] with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[Using the distributive law and the properties of exponentials <hint>alg_indices</hint> we get that
@@ -24,7 +23,7 @@ So, using linearity in integration <hint>calc_int_linearity_rule</hint>,
&\displaystyle =&\displaystyle \int {@ppp1/pp2@} d{@v@} - \int {@ppp2/pp2@} d{@v@} \\
&\displaystyle =&\displaystyle {@int(ppp1/pp2,v)@} - {@int(ppp2/pp2,v)@} + c \\
&\displaystyle =&\displaystyle {@int(p,v)@} + c
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_12/CR-Int-12-definite-1-f.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_12/CR-Int-12-definite-1-f.xml
index 2357a689573edec31a9a6a4252b4d6e5a23572bf..a86eacb180566d53bb0e9c876ae37ba317743ac6 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_12/CR-Int-12-definite-1-f.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_12/CR-Int-12-definite-1-f.xml
@@ -8,8 +8,7 @@
<text>Evaluate the following definite integral:
\[ \int^{@rdm3@}_{@rdm2@}{@p@}d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[If \[\int f(x) dx = F(x)\] then \[\int^a_b f(x) dx = F(a) - F(b).\]
@@ -25,7 +24,7 @@ Then,
\int^{@rdm3@}_{@rdm2@} {@p@} d{@v@} &\displaystyle =&\displaystyle F({@rdm3@}) - F({@rdm2@}) \\
&\displaystyle =&\displaystyle {@subst(rdm3,v,q)@} - {@subst(rdm2,v,q)@} \\
&\displaystyle =&\displaystyle {@subst(rdm3,v,q)-subst(rdm2,v,q)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_12/CR-Int-12-definite-1-g.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_12/CR-Int-12-definite-1-g.xml
index f84c99c498a572964a342932745dac933778a58c..3474c3b106902759284675b87f94f72102c4091b 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_12/CR-Int-12-definite-1-g.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_12/CR-Int-12-definite-1-g.xml
@@ -8,8 +8,7 @@
<text>Evaluate the following definite integral:
\[ \int^{@rdm3@}_{@rdm2@}{@p@}d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[If \[\int f(x) dx = F(x)+c\] then \[\int^a_b f(x) dx = F(a) - F(b).\]
@@ -25,7 +24,7 @@ Then,
\int^{@rdm3@}_{@rdm2@} {@p@} d{@v@} &\displaystyle =&\displaystyle F({@rdm3@}) - F({@rdm2@}) \\
&\displaystyle =&\displaystyle {@subst(rdm3,v,q)@} - {@subst(rdm2,v,q)@} \\
&\displaystyle =&\displaystyle {@subst(rdm3,v,q)-subst(rdm2,v,q)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_12/CR-Int-12-definite-1-h.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_12/CR-Int-12-definite-1-h.xml
index 96782ef06c1b0842b46d69f78c9dee4fa24d3806..f8b11e4cc7d2ae521e6dd123ebd49cf304c27e6b 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_12/CR-Int-12-definite-1-h.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_12/CR-Int-12-definite-1-h.xml
@@ -8,8 +8,7 @@
<text>Evaluate the following definite integral:
\[ \int^{@rdm3@}_{@rdm2@}{@p@}d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[If \[\int f(x) dx = F(x)+c\] then \[\int^a_b f(x) dx = F(a) - F(b).\]
@@ -25,7 +24,7 @@ Then,
\int^{@rdm3@}_{@rdm2@} {@p@} d{@v@} &\displaystyle =&\displaystyle F({@rdm3@}) - F({@rdm2@}) \\
&\displaystyle =&\displaystyle {@subst(rdm3,v,q)@} - {@subst(rdm2,v,q)@} \\
&\displaystyle =&\displaystyle {@subst(rdm3,v,q)-subst(rdm2,v,q)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_12/CR-Int-12-definite-3.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_12/CR-Int-12-definite-3.xml
index 5fa078ea8f721073d895cd2443f7793aaf537d14..a6bba5a021a82dfa7c8d17f930446396d0f88bde 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_12/CR-Int-12-definite-3.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_12/CR-Int-12-definite-3.xml
@@ -8,8 +8,7 @@
<text>Evaluate the following definite integral:
\[ \int^{@rdm3@}_{@rdm4@}{@p@}d{@v@}.\]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[If \[\int f(x) dx = F(x)\] then \[\int^a_b f(x) dx = F(a) - F(b).\]
@@ -25,7 +24,7 @@ Then,
\int^{@rdm3@}_{@rdm4@} {@p@} d{@v@} &\displaystyle =&\displaystyle F({@rdm3@}) - F({@rdm4@}) \\
&\displaystyle =&\displaystyle {@subst(rdm3,v,q)@}-{@subst(rdm4,v,q)@} \\
&\displaystyle =&\displaystyle {@subst(rdm3,v,q)-subst(rdm4,v,q)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-1-a.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-1-a.xml
index 21bfbdca53495ec57bc1caef798fc2f3fc038583..55b935ecb984ea9a07cac3fd459619103fceeb33 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-1-a.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-1-a.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Integrate {@p@} with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[If \(u\) and \(v\) are both functions of \(x\) then \[\int u dv = uv - \int v du.\]
@@ -24,7 +23,7 @@ So,
&\displaystyle =&\displaystyle {@pp1@}{@int(pp2,v)@} - \int {@int(pp2,v)@}{@diff(pp1,v)@}d{@v@} \\
&\displaystyle =&\displaystyle {@pp1*int(pp2,v)@} - \int {@int(pp2,v)*diff(pp1,v)@}d{@v@} \\
&\displaystyle =&\displaystyle {@pp1*int(pp2,v)-int((int(pp2,v)*diff(pp1,v)),v)@} + c
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-1-e.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-1-e.xml
index 1a12088804377abb1521e1b2a0e1fa9057051f62..ee8378c0695ff48c61f245726194e4419224392a 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-1-e.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-1-e.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Integrate {@p@} with respect to {@v@}.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[If \(u\) and \(v\) are both functions of \(x\) then \[\int u dv = uv - \int v du.\]
@@ -24,7 +23,7 @@ So,
&\displaystyle =&\displaystyle {@pp1@}{@int(pp2,v)@} - \int {@int(pp2,v)@}{@diff(pp1,v)@}d{@v@} \\
&\displaystyle =&\displaystyle {@pp1*int(pp2,v)@} - \int {@int(pp2,v)*diff(pp1,v)@}d{@v@} \\
&\displaystyle =&\displaystyle {@pp1*int(pp2,v)-int((int(pp2,v)*diff(pp1,v)),v)@} + c
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-2-a.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-2-a.xml
index 4e802a8d608aec8d961d97cd38d373483aa04f1c..bf271ed9f80f65c927001e73fc12e36097a28200 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-2-a.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-2-a.xml
@@ -8,8 +8,7 @@
<text>Evaluate the following definite integral:
\[ \int^{@rdm3@}_{@rdm4@} {@p@} d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[If \[\int f(x) dx = F(x)\] then \[\int^a_b f(x) dx = F(a) -
@@ -39,7 +38,7 @@ Then,
\int^{@rdm3@}_{@rdm4@} {@p@} d{@v@} &\displaystyle =&\displaystyle F({@rdm3@}) - F({@rdm4@}) \\
&\displaystyle =&\displaystyle {@subst(rdm3,v,q)@} - {@subst(rdm4,v,q)@} \\
&\displaystyle =&\displaystyle {@int(p,v,rdm4,rdm3)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-2-b.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-2-b.xml
index 1dd95a05e95d3c5772e92634820ab78262e88bfe..9d6e366e45774311b3370bebc0f6e9f54e575c52 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-2-b.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-2-b.xml
@@ -8,8 +8,7 @@
<text>Evaluate the following definite integral:
\[ \int^{@rdm3@}_{@rdm4@} {@p@} d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[If \[\int f(x) dx = F(x)\] then \[\int^a_b f(x) dx = F(a) -
@@ -39,7 +38,7 @@ Then,
\int^{@rdm3@}_{@rdm4@} {@p@} d{@v@} &\displaystyle =&\displaystyle F({@rdm3@}) - F({@rdm4@}) \\
&\displaystyle =&\displaystyle {@subst(rdm3,v,q)@} - {@subst(rdm4,v,q)@} \\
&\displaystyle =&\displaystyle {@int(p,v,rdm4,rdm3)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-2-c.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-2-c.xml
index c8210257cc9293874e03dccbd5810703b1fad2dd..20c9a71da7181c47fb9e1534e5513843af93f335 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-2-c.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-2-c.xml
@@ -8,8 +8,7 @@
<text>Evaluate the following definite integral:
\[ \int^{@rdm3@}_{@rdm4@} {@p@} d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[If \[\int f(x) dx = F(x)\] then \[\int^a_b f(x) dx = F(a) -
@@ -42,7 +41,7 @@ Then,
\[\begin{array}{rcl}\displaystyle
\int^{@rdm3@}_{@rdm4@} {@p@} d{@v@} &\displaystyle =&\displaystyle F({@rdm3@}) - F({@rdm4@}) \\
&\displaystyle =&\displaystyle {@rdm1*subst(rdm3,v,q)@} - {@rdm1*subst(rdm4,v,q)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-2-d.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-2-d.xml
index b855904dff4f6d9d77e2ced0b5f963f8214d88b2..cef9cfa0e82afe178309f5ed36812c90cd26965e 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-2-d.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-2-d.xml
@@ -8,8 +8,7 @@
<text>Evaluate the following definite integral:
\[ \int^{@rdm3@}_{@rdm4@} {@p@} d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[If \[\int f(x) dx = F(x)\] then \[\int^a_b f(x) dx = F(a) -
@@ -39,7 +38,7 @@ Then,
\int^{@rdm3@}_{@rdm4@} {@p@} d{@v@} &\displaystyle =&\displaystyle F({@rdm3@}) - F({@rdm4@}) \\
&\displaystyle =&\displaystyle {@subst(rdm3,v,q)@} - {@subst(rdm4,v,q)@} \\
&\displaystyle =&\displaystyle {@int(p,v,rdm4,rdm3)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-4-a.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-4-a.xml
index c977706d2764a44f371c1644503ec7a03802ad6f..670d2701c75b6cde4409a5f1c93629adfbdcd3ca 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-4-a.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-4-a.xml
@@ -8,8 +8,7 @@
<text>Evaluate the following definite integral:
\[ \int^{@rdm2@}_{@rdm3@} {@p@} d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[If \[\int f(x) dx = F(x)\] then
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-5.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-5.xml
index 1ef2e1be0d554428d82f45ce628291f8805dde31..3dbdb09fb81a0d2eb9566a0c7d7c43b19fccd2c5 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-5.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-5.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Integrate {@p@} with respect to {@v@} using the method of integration by parts, and taking \({@p@}=1\cdot \ {@p@}\).
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[If \(u\) and \(v\) are both functions of {@v@} then \[\int u dv = uv - \int v du.\]
@@ -24,7 +23,7 @@ Then,
&\displaystyle =&\displaystyle {@p@}{@int(1,v)@} - \int {@int(1,v)@}{@diff(p,v)@}d{@v@} \\
&\displaystyle =&\displaystyle {@p*int(1,v)@} - \int {@int(1,v)*diff(p,v)@}d{@v@} \\
&\displaystyle =&\displaystyle {@p*int(1,v)-int((int(1,v)*diff(p,v)),v)@}+c
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-6.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-6.xml
index 11d0b4f9d20a29ac4d6f1081f22ef9d6598fd5ee..20b9f413ee6067e103513a36e809eb3c6c498ef1 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-6.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-6.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Integrate {@p@} with respect to {@v@} using the method of integration by parts.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[To solve this problem we will have to use the method of integration by parts <hint>calc_int_methods_parts</hint> as follows:
@@ -32,8 +31,7 @@ So,
\[\begin{array}{rcl}\displaystyle
2\int {@p@} d{@v@} &\displaystyle =&\displaystyle {@pp1*pp1@} + c \\
\int {@p@} d{@v@} &\displaystyle =&\displaystyle {@int(p,v)@} + k
- \end{array}\]
-]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-7.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-7.xml
index 1b31f0cacbe1cad87871d0058ab8babb9374ae8b..fe0b3616f232d8ed685a5ff34e62b82e267fbfaf 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-7.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_13/CR-Int-13-parts-7.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Integrate {@p@} with respect to \(t\) using the method of integration by parts.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[To solve this problem we will have to use the method of integration by parts
@@ -46,8 +45,7 @@ Hence,
\[\begin{array}{rcl}\displaystyle
2\int {@p@} dt &\displaystyle =&\displaystyle {@pp1*int(pp2,t)-diff(pp1,t)*int(int(pp2,t),t)@} + c \\
\int {@p@} dt &\displaystyle =&\displaystyle {@ta@} + k.
-\end{array}\]
-]]></text>
+\end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-1-b.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-1-b.xml
index 11ed104809645db888ad1fc5252585b7584c878f..56cf54e7251e83e52fa7bd3008536d7491ef6be9 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-1-b.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-1-b.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Integrate {@p@} with respect to {@v@} using the substitution \(u={@ppp@}\).
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[We need to calculate \[\int {@p@} d{@v@}\] by means of the substitution \(u={@ppp@}\) <hint>calc_int_methods_substitution</hint>.
@@ -22,7 +21,7 @@ Hence,
&\displaystyle =&\displaystyle \int {@subst(u,ppp,p)/diff(ppp,v)@} d{@u@} \\
&\displaystyle =&\displaystyle {@int(subst(u,ppp,p)/diff(ppp,v),u)+c@} \\
&\displaystyle =&\displaystyle {@int(p,v)+c@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-1-i.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-1-i.xml
index cb08b5c66f7653381ac3007656cc74747a467e87..73265af0919925ad3f44cd4673da11426e7c1b31 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-1-i.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-1-i.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Integrate {@p@} with respect to {@v@} using the substitution \(u={@ppp@}\).
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[We need to calculate \[\int {@p@} d{@v@}\] by means of the substitution \(u={@ppp@}\) <hint>calc_int_methods_substitution</hint>.
@@ -22,7 +21,7 @@ Hence,
&\displaystyle =&\displaystyle \int {@subst(u,ppp,p)/diff(ppp,v)@} d{@u@} \\
&\displaystyle =&\displaystyle {@int(subst(u,ppp,p)/diff(ppp,v),u)+c@} \\
&\displaystyle =&\displaystyle {@int(p,v)+c@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-3-b.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-3-b.xml
index eb782aeeca4accffc2648c1b65b5f85da9a8e6da..c8846916414f271aa40dae0cbfa6f94066927010 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-3-b.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-3-b.xml
@@ -10,8 +10,7 @@
Hint: Use the substitution \(u = {@pp2@}\)
<br />
[[input:ans1]]
-[[validation:ans1]]
-]]></text>
+[[validation:ans1]]]]></text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[We need to solve \[\int {@p@} d{@v@}\] using the substitution \(u = {@pp2@}\) <hint>calc_int_methods_substitution</hint>.
@@ -38,7 +37,7 @@ Then,
\int^{@rdm1@}_{@rdm2@} {@p@} d{@v@} &\displaystyle =&\displaystyle F({@rdm1@}) - F({@rdm2@}) \\
&\displaystyle =&\displaystyle {@subst(rdm1,v,subst(pp2,u,int(expand(subst(q,v,p)*diff(q,u)),u)))@}-{@subst(rdm2,v,subst(pp2,u,int(expand(subst(q,v,p)*diff(q,u)),u)))@} \\
&\displaystyle =&\displaystyle {@subst(rdm1,v,subst(pp2,u,int(expand(subst(q,v,p)*diff(q,u)),u)))-subst(rdm2,v,subst(pp2,u,int(expand(subst(q,v,p)*diff(q,u)),u)))@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
@@ -66,8 +65,7 @@ q1:(int(p,v));]]></text>
<text><![CDATA[<p>[[feedback:Result]]</p>]]></text>
</specificfeedback>
<questionnote format="moodle_auto_format">
- <text>\[\int^{@rdm1@}_{@rdm2@} {@p@} d{@v@} = {@int(p,v,rdm2,rdm1)@}\]
-</text>
+ <text>\[\int^{@rdm1@}_{@rdm2@} {@p@} d{@v@} = {@int(p,v,rdm2,rdm1)@}\]</text>
</questionnote>
<questiondescription format="moodle_auto_format">
<text/>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-3-c.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-3-c.xml
index 472a0580ac0d0333cba5ab708562e53e5d983811..60a489fd87471a596d76cf3051dc5a7d01088191 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-3-c.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-3-c.xml
@@ -53,15 +53,13 @@ pp2:(v+rdm3)^(1/2);
p:v*pp2;
dumvar7:u;
q:rhs(solve(u=pp2,v)[1]);
-q1:int(p,v);
-]]></text>
+q1:int(p,v);]]></text>
</questionvariables>
<specificfeedback format="html">
<text><![CDATA[<p>[[feedback:Result]]</p>]]></text>
</specificfeedback>
<questionnote format="moodle_auto_format">
- <text>\[\int^{@rdm1@}_{@rdm2@} {@p@} d{@v@} = {@int(p,v,rdm2,rdm1)@}\]
-</text>
+ <text>\[\int^{@rdm1@}_{@rdm2@} {@p@} d{@v@} = {@int(p,v,rdm2,rdm1)@}\]</text>
</questionnote>
<questiondescription format="moodle_auto_format">
<text/>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-3-d.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-3-d.xml
index ff02a9a22dd0fd44aeca705ed4a759912438461b..1f4868571282808d150f20212f384b4db3c047ab 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-3-d.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-3-d.xml
@@ -8,8 +8,7 @@
<text>Evaluate the following definite integral: \[\int^{@rdm1@}_{@rdm2@} {@p@} d{@v@}\]
Hint: Use the substitution \(u = {@pp2@}\)
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[We need to solve \[\int {@p@} d{@v@}\] using the substitution \(u = {@pp2@}\) <hint>calc_int_methods_substitution</hint>.
@@ -36,7 +35,7 @@ Then,
\int^{@rdm1@}_{@rdm2@} {@p@} d{@v@} &\displaystyle =&\displaystyle F({@rdm1@}) - F({@rdm2@}) \\
&\displaystyle =&\displaystyle {@subst(rdm1,v,q1)@}-{@subst(rdm2,v,q1)@} \\
&\displaystyle =&\displaystyle {@subst(rdm1,v,q1)-subst(rdm2,v,q1)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
@@ -61,8 +60,7 @@ q1:factor(int(p,v));</text>
<text><![CDATA[<p>[[feedback:Result]]</p>]]></text>
</specificfeedback>
<questionnote format="moodle_auto_format">
- <text>\[\int^{@rdm1@}_{@rdm2@} {@p@} d{@v@} = {@int(p,v,rdm2,rdm1)@}\]
-</text>
+ <text>\[\int^{@rdm1@}_{@rdm2@} {@p@} d{@v@} = {@int(p,v,rdm2,rdm1)@}\]</text>
</questionnote>
<questiondescription format="moodle_auto_format">
<text/>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-3-f.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-3-f.xml
index f1f82a9934b42106f543480ab27818917f9124eb..add8e3d0ebb85d7318e1e6db2ca70b7495dbb9b7 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-3-f.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-3-f.xml
@@ -8,8 +8,7 @@
<text>Evaluate the following definite integral: \[\int^{@rdm1@}_{@rdm2@} {@p@} d{@v@}\]
Hint: Use the substitution \(u = {@pp2@}\)
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[We need to solve \[\int {@p@} d{@v@}\] using the substitution \(u = {@pp2@}\) <hint>calc_int_methods_substitution</hint>.
@@ -36,7 +35,7 @@ Then,
\int^{@rdm1@}_{@rdm2@} {@p@} d{@v@} &\displaystyle =&\displaystyle F({@rdm1@}) - F({@rdm2@}) \\
&\displaystyle =&\displaystyle {@subst(rdm1,v,q1)@}-{@subst(rdm2,v,q1)@} \\
&\displaystyle =&\displaystyle {@subst(rdm1,v,q1)-subst(rdm2,v,q1)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
@@ -59,8 +58,7 @@ q1:int(p,v);</text>
<text><![CDATA[<p>[[feedback:Result]]</p>]]></text>
</specificfeedback>
<questionnote format="moodle_auto_format">
- <text>\[\int^{@rdm1@}_{@rdm2@} {@p@} d{@v@} = {@int(p,v,rdm2,rdm1)@}\]
-</text>
+ <text>\[\int^{@rdm1@}_{@rdm2@} {@p@} d{@v@} = {@int(p,v,rdm2,rdm1)@}\]</text>
</questionnote>
<questiondescription format="moodle_auto_format">
<text/>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-3-g.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-3-g.xml
index 8a2aa58f75893034564e33f51ebef69d2295ffec..d5298df168d5056796a47621d920fdef94efeeaa 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-3-g.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-3-g.xml
@@ -8,8 +8,7 @@
<text>Evaluate the following definite integral: \[\int^{@rdm1@}_{@rdm2@} {@p@} d{@v@}\]
Hint: Use the substitution \(u = {@pp2@}\)
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[We need to solve \[\int {@p@} d{@v@}\] using the substitution \(u = {@pp2@}\) <hint>calc_int_methods_substitution</hint>.
@@ -36,7 +35,7 @@ Then,
\int^{@rdm1@}_{@rdm2@} {@p@} d{@v@} &\displaystyle =&\displaystyle F({@rdm1@}) - F({@rdm2@}) \\
&\displaystyle =&\displaystyle {@subst(rdm1,v,q1)@}-{@subst(rdm2,v,q1)@} \\
&\displaystyle =&\displaystyle {@subst(rdm1,v,q1)-subst(rdm2,v,q1)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
@@ -61,8 +60,7 @@ q1:int(p,v);]]></text>
<text><![CDATA[<p>[[feedback:Result]]</p>]]></text>
</specificfeedback>
<questionnote format="moodle_auto_format">
- <text>\[\int^{@rdm1@}_{@rdm2@} {@p@} d{@v@} = {@int(p,v,rdm2,rdm1)@}\]
-</text>
+ <text>\[\int^{@rdm1@}_{@rdm2@} {@p@} d{@v@} = {@int(p,v,rdm2,rdm1)@}\]</text>
</questionnote>
<questiondescription format="moodle_auto_format">
<text/>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-5-a.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-5-a.xml
index 59ff813505e4e1851d82dc07cf50857d4787e3bd..246b1d89a3a457f13afbf8afe13449ae51551da8 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-5-a.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-5-a.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Find the following integral:\[ \int {@p@} d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[We need to calculate \[\int {@p@} d{@v@}\] by means of the substitution \(u={@pp1@}\) <hint>calc_int_methods_substitution</hint>.
@@ -19,7 +18,7 @@ Hence,
\[\begin{array}{rcl}\displaystyle
\int {@p@} d{@v@} &\displaystyle =&\displaystyle \int {@pp2/u@} \frac{d{@u@}}{@diff(pp1,v)@} \\&\displaystyle =&\displaystyle \int {@1/u@} d{@u@} \\&\displaystyle =&\displaystyle {@int(1/u,u)+c@} \\&\displaystyle =&\displaystyle {@int(p,v)+c@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-6-a.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-6-a.xml
index 18ce062ca5fd5fbb714c57ef6c48bb12575e524f..83587aea12cd8cd1e0db9350a476abe8b491002b 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-6-a.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_14/CR-Int-14-substitution-6-a.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Using the method of integration by substitution, find the following integral:\[ \int {@p@} d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[We need to calculate \[\int {@p@} d{@v@}\] by means of the substitution \(u={@pp1@}\) <hint>calc_int_methods_substitution</hint>.
@@ -19,7 +18,7 @@ Hence,
\[\begin{array}{rcl}\displaystyle
\int {@p@} d{@v@} &\displaystyle =&\displaystyle \int {@pp2/u@} \frac{d{@u@}}{@diff(pp1,v)@} \\&\displaystyle =&\displaystyle \int {@pp2/u/diff(pp1,v)@} d{@u@} \\&\displaystyle =&\displaystyle {@pp2/diff(pp1,v)@} \int {@1/u@} d{@u@} \\&\displaystyle =&\displaystyle {@pp2/diff(pp1,v)@}{@int(1/u,u)+c@} \\&\displaystyle =&\displaystyle {@int(p,v)+c@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-1-b.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-1-b.xml
index af57ed740d28a2af84fe1830be475b0b5f9b27d3..d5a741533c24cd0ab84798eaf4aa70663a90ed40 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-1-b.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-1-b.xml
@@ -8,8 +8,7 @@
<text>By expressing the integrand as the sum of its partial fractions, find the following integral:
\[ \int {@p@} d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to calculate \[\int {@p@} d{@v@}\] we need to express \[{@p@}\] as the sum of its partial fractions <hint>alg_partial_fractions</hint>.
@@ -36,7 +35,7 @@ Hence,
\int {@p@} d{@v@} &\displaystyle =&\displaystyle \int {@q@} d{@v@} \\
&\displaystyle =&\displaystyle {@rdm1@} \int {@ppp1@} d{@v@} + {@rdm2@} \int {@ppp2@} d{@v@} \\
&\displaystyle =&\displaystyle {@rdm1*int(ppp1,v)@} + {@rdm2*int(ppp2,v)@} +c
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-1-e.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-1-e.xml
index e729f173056b1fd85ed0957cfd098699a5742f38..ab6e4d31858ed84522dbcdf726accbb679ba3730 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-1-e.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-1-e.xml
@@ -8,8 +8,7 @@
<text>By expressing the integrand as the sum of its partial fractions, find the following integral:
\[ \int {@p@} d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to calculate \[\int {@p@} d{@v@}\] we need to express \[{@p@}\] as the sum of its partial fractions <hint>alg_partial_fractions</hint>.
@@ -36,7 +35,7 @@ Hence,
\int {@p@} d{@v@} &\displaystyle =&\displaystyle \int {@q@} d{@v@} \\
&\displaystyle =&\displaystyle {@rdm1@} \int {@ppp1@} d{@v@} + {@rdm2@} \int {@ppp2@} d{@v@} \\
&\displaystyle =&\displaystyle {@rdm1*int(ppp1,v)@} + {@rdm2*int(ppp2,v)@} +c
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-10.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-10.xml
index 3a72682cdb6226969e0e846958effbbb1dc3e23c..c3d793c6f02fb72a860cb48cc7a11701b37fe714 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-10.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-10.xml
@@ -9,8 +9,7 @@
\[ \int {@p@} d{@v@} \]
by expressing the integrand in partial fractions.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[Since the degree of the numerator is greater than the degree of the denominator we need to use long division the get a simpler form to express \[{@p@}.\] <hint>alg_partial_fractions</hint>
@@ -39,7 +38,7 @@ So,
&\displaystyle =&\displaystyle {@rdm2@} \int {@ppp1@} d{@v@} + {@rdm3@} \int {@ppp2@} d{@v@} + \int ({@pp3@}) d{@v@} \\
&\displaystyle =&\displaystyle {@rdm2*int(ppp1,v)@} + {@rdm3*int(ppp2,v)@} + {@int(pp3,v)@}+c \\
&\displaystyle =&\displaystyle {@rdm2*int(ppp1,v)+rdm3*int(ppp2,v)+int(pp3,v)@}+c
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-2-a.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-2-a.xml
index 9e9a6da343957fc2d9899db348668fc3dcd51d52..981c517b6cd34463b517c6adee1f3bc98ca357b6 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-2-a.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-2-a.xml
@@ -8,8 +8,7 @@
<text>By expressing the integrand as the sum of its partial fractions, find the following definite integral:
\[ \int^{@rdm5@}_{@rdm6@} {@p@} d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to calculate \[\int {@p@} d{@v@}\] we need to express the integrand as the sum of its partial fractions.
@@ -43,8 +42,7 @@ Then,
\int^{@rdm5@}_{@rdm6@} {@p@} d{@v@} &\displaystyle =&\displaystyle F({@rdm5@}) - F({@rdm6@}) \\
&\displaystyle =&\displaystyle {@subst(rdm5,v,pq)@} - [{@subst(rdm6,v,pq)@}] \\
&\displaystyle =&\displaystyle {@subst(rdm5,v,pq)-subst(rdm6,v,pq)@}.
- \end{array}\]
-]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-2-b.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-2-b.xml
index 42c2630ebf03a08e69ddc5e4d0b94b3ae6a44f20..86459866675a8b6852ceeafaa9574f853ee361be 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-2-b.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-2-b.xml
@@ -8,8 +8,7 @@
<text>By expressing the integrand as the sum of its partial fractions, find the following definite integral:
\[ \int^{@rdm5@}_{@rdm6@} {@p@} d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to calculate \[\int {@p@} d{@v@}\] we need to express \[{@p@}\] as the sum of its partial fractions.
@@ -44,8 +43,7 @@ Then,
\int^{@rdm5@}_{@rdm6@} {@p@} d{@v@} &\displaystyle =&\displaystyle F({@rdm5@}) - F({@rdm6@}) \\
&\displaystyle =&\displaystyle {@subst(rdm5,v,pq)@} - [{@subst(rdm6,v,pq)@}] \\
&\displaystyle =&\displaystyle {@subst(rdm5,v,pq)-subst(rdm6,v,pq)@}
- \end{array}\]
-]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-3-a.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-3-a.xml
index c14b3798330c97bf8ff4b42db84819bc35cd5fc3..4995931db7a38e2e45f4dc6b0b9500081e765073 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-3-a.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-3-a.xml
@@ -8,8 +8,7 @@
<text>By expressing the integrand as the sum of its partial fractions, find the following integral:
\[ \int {@p@} d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to calculate \[\int {@p@} d{@v@}\] we need to express \[{@p@}\] as the sum of its partial fractions <hint>alg_partial_fractions</hint>.
@@ -37,7 +36,7 @@ Hence,
&\displaystyle =&\displaystyle {@rdm2@} \int {@ppp1@} d{@v@} + {@rdm2@} \int {@ppp2@} d{@v@} \\
&\displaystyle =&\displaystyle {@rdm2*int(ppp1,v)@} + {@rdm2*int(ppp2,v)@} +c \\
&\displaystyle =&\displaystyle {@rdm2*int(ppp1,v)+rdm2*int(ppp2,v)@} +c
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-3-b.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-3-b.xml
index 56e4ddccfa47f74cf219da5ec3b76a1a39fdda76..7353bd4af44568d6dccc77705825de05847cc0a5 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-3-b.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-3-b.xml
@@ -8,8 +8,7 @@
<text>By expressing the integrand as the sum of its partial fractions, find the following integral:
\[ \int {@p@} d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to calculate \[\int {@p@} d{@v@}\] we need to express \[{@p@}\] as the sum of its partial fractions <hint>alg_partial_fractions</hint>.
@@ -37,7 +36,7 @@ Hence,
&\displaystyle =&\displaystyle {@rdm2@} \int {@ppp1@} d{@v@} + {@rdm2@} \int {@ppp2@} d{@v@} \\
&\displaystyle =&\displaystyle {@rdm2*int(ppp1,v)@} + {@rdm2*int(ppp2,v)@} +c \\
&\displaystyle =&\displaystyle {@rdm2*int(ppp1,v)+rdm2*int(ppp2,v)@} +c
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-3-c.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-3-c.xml
index 031ad63da75da01fbe79cf5b6eabbcef863a42e3..95c8adf554fe65a2bd3fd9624b0ba83a3a5db737 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-3-c.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-3-c.xml
@@ -8,8 +8,7 @@
<text>By expressing the integrand as the sum of its partial fractions, find the following integral:
\[ \int {@p@} d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to calculate \[\int {@p@} d{@v@}\] we need to express \[{@p@}\] as the sum of its partial fractions <hint>alg_partial_fractions</hint>.
@@ -37,7 +36,7 @@ Hence,
&\displaystyle =&\displaystyle {@rdm2@} \int {@ppp1@} d{@v@} + {@rdm2@} \int {@ppp2@} d{@v@} \\
&\displaystyle =&\displaystyle {@rdm2*int(ppp1,v)@} + {@rdm2*int(ppp2,v)@} +c \\
&\displaystyle =&\displaystyle {@rdm2*int(ppp1,v)+rdm2*int(ppp2,v)@} +c
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-4-b.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-4-b.xml
index dc5178d70366af0e8405d985e505987e11bfa6fc..54bd8df22c9656e69adf2ae1cf084f071c7f3790 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-4-b.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-4-b.xml
@@ -8,8 +8,7 @@
<text>By expressing the integrand as the sum of its partial fractions, find the following definite integral:
\[ \int^{@rdm4@}_{@rdm5@} {@p@} d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to calculate \[\int {@p@} d{@v@}\] we need to express \[{@p@}\] as the sum of its partial fractions <hint>alg_partial_fractions</hint>.
@@ -39,8 +38,7 @@ Then,
\int^{@rdm4@}_{@rdm5@} {@p@} d{@v@} &\displaystyle =&\displaystyle F({@rdm4@}) - F({@rdm5@}) \\
&\displaystyle =&\displaystyle {@subst(rdm4,v,pq)@} - \left[{@subst(rdm5,v,pq)@}\right] \\
&\displaystyle =&\displaystyle {@subst(rdm4,v,pq)-subst(rdm5,v,pq)@}
- \end{array}\]
-]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-4-c.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-4-c.xml
index 12b988010db31754c640d5c9f4ceb1a637b540e0..5278442fd2f0956a5ac84998edc5c23eeb00be8d 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-4-c.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-4-c.xml
@@ -8,8 +8,7 @@
<text>By expressing the integrand as the sum of its partial fractions, find the following definite integral:
\[ \int^{@rdm4@}_{@rdm5@} {@p@} d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to calculate \[\int {@p@} d{@v@}\] we need to express \[{@p@}\] as the sum of its partial fractions <hint>alg_partial_fractions</hint>.
@@ -33,8 +32,7 @@ Then,
\int^{@rdm4@}_{@rdm5@} {@p@} d{@v@} &\displaystyle =&\displaystyle F({@rdm4@}) - F({@rdm5@}) \\
&\displaystyle =&\displaystyle {@subst(rdm4,v,pq)@} - \left[{@subst(rdm5,v,pq)@}\right] \\
&\displaystyle =&\displaystyle {@subst(rdm4,v,pq)-subst(rdm5,v,pq)@}
- \end{array}\]
-]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-5.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-5.xml
index fecbce3fe79c7a0889f5f8a2f157bea06856b2f0..a1a23503c7310d9384b9d98ed76c76c33865c27a 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-5.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-5.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Find \[ \int {@p@} d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to calculate \[\int {@p@} d{@v@}\] we need to express \[{@p@}\] as the sum of its partial fractions <hint>alg_partial_fractions</hint>.
@@ -36,7 +35,7 @@ Hence,
&\displaystyle =&\displaystyle {@rdm3@} \int {@ppp1@} d{@v@} + {@rdm3@} \int {@ppp2@} d{@v@} + {@rdm3@} \int {@ppp3@} d{@v@} \\
&\displaystyle =&\displaystyle {@rdm2*int(ppp1,v)@} + {@rdm2*int(ppp2,v)@} + {@rdm3*int(ppp3,v)@} +c \\
&\displaystyle =&\displaystyle {@rdm2*int(ppp1,v)+rdm2*int(ppp2,v)+rdm3*int(ppp3,v)@} +c
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-6.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-6.xml
index d26937caa13a8183c6b2f0797fc1416b8f5c5f02..ede775a561be6e484dd79d765fad5f53ae4c2bae 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-6.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-6.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Find \[ \int {@p@} d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to calculate \[\int {@p@} d{@v@}\] we need to express \[{@p@}\] as the sum of its partial fractions <hint>alg_partial_fractions</hint>.
@@ -36,7 +35,7 @@ Hence,
&\displaystyle =&\displaystyle {@rdm4@} \int {@ppp1@} d{@v@} + {@rdm5@} \int {@ppp2@} d{@v@} + {@rdm6@} \int {@ppp3@} d{@v@} \\
&\displaystyle =&\displaystyle {@rdm4*int(ppp1,v)@} + {@rdm5*int(ppp2,v)@} + {@rdm6*int(ppp3,v)@} +c \\
&\displaystyle =&\displaystyle {@rdm4*int(ppp1,v)+rdm5*int(ppp2,v)+rdm6*int(ppp3,v)@} +c
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-7.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-7.xml
index a2cc4dcb6c168fc41c5d2fe28b8a403f16260714..82d83cabe1f88bfd41405e95e30889520743b98c 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-7.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-7.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Find \[ \int {@p@} d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to calculate \[\int {@p@} d{@v@}\] we need to express \[{@p@}\] as the sum of its partial fractions <hint>alg_partial_fractions</hint>.
@@ -36,7 +35,7 @@ Hence,
&\displaystyle =&\displaystyle {@rdm4@} \int {@ppp1@} d{@v@} + {@rdm5@} \int {@ppp2@} d{@v@} + {@rdm6@} \int {@ppp3@} d{@v@} \\
&\displaystyle =&\displaystyle {@rdm4*int(ppp1,v)@} + {@rdm5*int(ppp2,v)@} + {@rdm6*int(ppp3,v)@} +c \\
&\displaystyle =&\displaystyle {@rdm4*int(ppp1,v)+rdm5*int(ppp2,v)+rdm6*int(ppp3,v)@} +c
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-8.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-8.xml
index 641ce4f5c50458985be16424dc2b2fd8f341b6da..e69158fe4943551fd126a26d0f8fa6764d6531e3 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-8.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-8.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Find \[ \int {@p@} d{@v@}. \] Note that the degree of the numerator is greater then the degree of the denominator.
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[Since the degree of the numerator is greater than the degree of the denominator we need to use long division the get a simpler form to express \[{@p@}.\] <hint>alg_partial_fractions</hint>
@@ -37,7 +36,7 @@ So,
&\displaystyle =&\displaystyle {@rdm4@} \int {@ppp1@} d{@v@} + {@rdm5@} \int {@ppp2@} d{@v@} + \int ({@pp3@}) d{@v@} \\
&\displaystyle =&\displaystyle {@rdm4*int(ppp1,v)@} + {@rdm5*int(ppp2,v)@} + {@int(pp3,v)@}+c \\
&\displaystyle =&\displaystyle {@rdm4*int(ppp1,v)+rdm5*int(ppp2,v)+int(pp3,v)@}+c
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-9.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-9.xml
index 3e73fd6fc40e3ab15e40e0992ebb18a906ff0627..866cdc7bad3272241ceda99c803fa40fcded3b39 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-9.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_15/CR-Int-15-partialfrac-9.xml
@@ -28,7 +28,7 @@ So,
&\displaystyle =&\displaystyle {@rdm2@} \int {@ppp1@} d{@v@} + {@rdm4@} \int {@ppp2@} d{@v@} + {@rdm3@} \int \left({@ppp3@}\right) d{@v@} + \int {@pp4@} d{@v@} \\
&\displaystyle =&\displaystyle {@rdm2*int(ppp1,v)@} + {@rdm4*int(ppp2,v)@} + {@rdm3*int(ppp3,v)@}+ {@int(pp4,v)@} + c \\
&\displaystyle =&\displaystyle {@rdm2*int(ppp1,v)+rdm4*int(ppp2,v)+rdm3*int(ppp3,v)+int(pp4,v)@}+c
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_16/CR-Int-16-trigonometric-1-b.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_16/CR-Int-16-trigonometric-1-b.xml
index b44076e1e8eb30aec0ce12096e64f36b21ac136c..0d559ea476851f7062e62daebbef98d9ed86b4f4 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_16/CR-Int-16-trigonometric-1-b.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_16/CR-Int-16-trigonometric-1-b.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Find \[ \int {@p@} d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text>\[ \int {@p@} d{@v@} = {@int(p,v)@}+c\]</text>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_16/CR-Int-16-trigonometric-3.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_16/CR-Int-16-trigonometric-3.xml
index ee0728028ce66e86aea6b11fdb9ec2243b6e48de..07f73d2f676685fa442082db726a1d30ffd18c1a 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_16/CR-Int-16-trigonometric-3.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_16/CR-Int-16-trigonometric-3.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Use the identity \[\sin(A)\cos(A)=\frac{\sin(2A)}{2}\] to find \[ \int {@p@} d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[Since \[{@p@} = {@q@}\] it follows that
@@ -16,7 +15,7 @@
\[\begin{array}{rcl}\displaystyle
\int {@p@} d{@v@} &\displaystyle =&\displaystyle \int {@q@} d{@v@} \\
&\displaystyle =&\displaystyle {@int(q,v)@}+c
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-03.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-03.xml
index fb082988f8ef7bfe3d2d6f0b8a25a8420fb278b8..bd86bcc84c973bfd82c9157f39f52189caf3e167 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-03.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-03.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Find \[ \int {@p@} d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[This problem can be solved using integration by parts.
@@ -25,7 +24,7 @@ So,
&\displaystyle =&\displaystyle {@pp2@}{@int(pp1,v)@} - \int {@int(pp1,v)@}{@diff(pp2,v)@}d{@v@} \\
&\displaystyle =&\displaystyle {@pp2*int(pp1,v)@} - \int {@int(pp1,v)*diff(pp2,v)@}d{@v@} \\
&\displaystyle =&\displaystyle {@pp2*int(pp1,v)@} - {@int(int(pp1,v)*diff(pp2,v),v)+c@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-04.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-04.xml
index 2ba8a92c5cbb9f03be4ef70151891d5d9a15349f..9085e307f3ed4bc8ac1cb02b40cf39cc38b0e203 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-04.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-04.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Find \[ \int {@p@} d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[By linearity <hint>calc_int_linearity_rule</hint>:
@@ -17,7 +16,7 @@
&\displaystyle =&\displaystyle {@rdm1@}\int {@ppp1@} d{@v@} + {@rdm3@}\int {@ppp2@} d{@v@} + \int {@pp3@} d{@v@} \\
&\displaystyle =&\displaystyle {@rdm1*int(ppp1,v)@} + {@rdm3*int(ppp2,v)@} + {@int(pp3,v)@} +c \\
&\displaystyle =&\displaystyle {@int(p,v)+c@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-05.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-05.xml
index 8489a5ccf829ffc877fec32cf000cbab07f88270..72cd99a92fb9c95f6d7035f0d232766478f749a0 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-05.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-05.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Find \[ \int {@p@} d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[By linearity <hint>calc_int_linearity_rule</hint>:
@@ -17,7 +16,7 @@
&\displaystyle =&\displaystyle \int {@pp1@} d{@v@} + {@rdm2@}\int {@ppp2@} d{@v@} \\
&\displaystyle =&\displaystyle {@int(pp1,v)@} + {@rdm2*int(ppp2,v)@} +c \\
&\displaystyle =&\displaystyle {@int(p,v)+c@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-06.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-06.xml
index 4dd6439c637b38696d67381788320e9db7c85a18..40378dd87e0bdaad93906e078fb8b1b3f46e3dd8 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-06.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-06.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>By taking logarithms to the base \(e\) establish that \(a^x\) can be written as \(e^{xlna}\). Hence find \[ \int {@p@} d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[Using the laws of logarithms \[e^{ln(x)} = x\] and \[ln(x^k) = kln(x)\] we get that
@@ -23,7 +22,7 @@ So,
\[\begin{array}{rcl}\displaystyle
\int {@p@} d{@v@} &\displaystyle =&\displaystyle \int e^{x\cdot ln(a)} d{@v@} \\
&\displaystyle =&\displaystyle {@int(p,v)+c@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-08.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-08.xml
index 6cba78325b8b883bcd4a65738d16561003007f56..31d92e3cf6a7a946f38f182a478bc1e6d56f42dd 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-08.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-08.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Find \[ \int {@p@} d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to calculate \[\int {@p@} d{@v@}\] we need to express \[{@p@}\] as the sum of its partial fractions <hint>alg_partial_fractions</hint>.
@@ -33,7 +32,7 @@ Hence,
\int {@p@} d{@v@} &\displaystyle =&\displaystyle \int {@q@} d{@v@} \\
&\displaystyle =&\displaystyle \int {@pp1@} d{@v@} + \int {@pp2@} d{@v@} \\
&\displaystyle =&\displaystyle {@int(pp1,v)+int(pp2,v)@} +c
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-09.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-09.xml
index 511b414683023bb08f33f95edf0f6130f4033d24..7dac9b5de22fb925bbf139d12a13ea80ecbd0f5f 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-09.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-09.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Find \[ \int {@p@} d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[If \(u\) and \(v\) are both functions of \(x\) then
@@ -29,8 +28,7 @@ Hence,
And so,
-\[\int {@p@} d{@v@} = \frac{@pp1*int(pp2,v)@}{2}+ \frac{c}{2}.\]
-]]></text>
+\[\int {@p@} d{@v@} = \frac{@pp1*int(pp2,v)@}{2}+ \frac{c}{2}.\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-10.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-10.xml
index e32e6925f6fbbeaa746059e9d1f2e10325f0cfd2..97f9f4156be29f7d1f85c9aeea2cb9fc2ea249be 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-10.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-10.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Find \[ \int^{@rdm1@}_{@rdm2@} {@p@} d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[To solve this problem we will have to express {@p@} in a simpler way using some trigonometric identities <hint>trig_standard_identities</hint>
@@ -46,7 +45,7 @@ Then
\int^{@rdm1@}_{@rdm2@} {@p@} d{@v@} &\displaystyle =&\displaystyle F({@rdm1@}) - F({@rdm2@}) \\
&\displaystyle =&\displaystyle {@subst(rdm1,v,q)@} - \left[{@subst(rdm2,v,q)@}\right] \\
&\displaystyle =&\displaystyle {@subst(rdm1,v,q)-subst(rdm2,v,q)@}
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-12.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-12.xml
index e9ba630a07bf7b80df31447cfc0c373fcafbdd0b..001fd4e90d2f31876ed6a32a8b9eb15a188a71e7 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-12.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-12.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Find \[ \int {@p@} d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to solve this problem we will have to use the method of integration by parts <hint>calc_int_methods_parts</hint> as follows:
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-13.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-13.xml
index f93abfd689c134d4db270ad13b4b30f2c3f30dfa..ee810718ec9a91fc0a416768c5e891c8e270313e 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-13.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-13.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Find \[ \int {@p@} d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[In order to calculate \[\int {@p@} d{@v@}\] we need to express \[{@p@}\] as the sum of its partial fractions <hint>alg_partial_fractions</hint>.
@@ -31,7 +30,7 @@ Hence,
\[\begin{array}{rcl}\displaystyle
\int {@p@} d{@v@} &\displaystyle =&\displaystyle \int {@q@} d{@v@} \\&\displaystyle =&\displaystyle {@rdm4@} \int {@ppp1@} d{@v@} + {@rdm5@} \int {@ppp2@} d{@v@} + {@rdm6@} \int {@ppp3@} d{@v@} \\&\displaystyle =&\displaystyle {@rdm4*int(ppp1,v)@} + {@rdm5*int(ppp2,v)@} + {@rdm6*int(ppp3,v)@} +c \\&\displaystyle =&\displaystyle {@rdm4*int(ppp1,v)+rdm5*int(ppp2,v)+rdm6*int(ppp3,v)@} +c
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-14.xml b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-14.xml
index fa35afaf54123ed1d214c506b187793ceebb9120..7960254c8a2fa70e0ba5e78115690266925ea391 100644
--- a/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-14.xml
+++ b/samplequestions/stacklibrary/Calculus-Refresher/CR_Int_17/CR-Int-17-misc-14.xml
@@ -7,8 +7,7 @@
<questiontext format="html">
<text>Find \[ \int {@p@} d{@v@}. \]
-[[input:ans1]] [[validation:ans1]]
-</text>
+[[input:ans1]] [[validation:ans1]]</text>
</questiontext>
<generalfeedback format="html">
<text><![CDATA[Since the degree of the numerator is greater than the degree of the denominator we need to use long division to get a simpler form to express \[{@p@}.\] <hint>alg_partial_fractions</hint>
@@ -34,7 +33,7 @@ So,
\[\begin{array}{rcl}\displaystyle
\int {@p@} d{@v@} &\displaystyle =&\displaystyle \int {@q@} d{@v@} \\&\displaystyle =&\displaystyle {@rdm3@} \int {@ppp1@} d{@v@} + {@rdm4@} \int {@ppp2@} d{@v@} + \int ({@pp3@}) d{@v@} \\&\displaystyle =&\displaystyle {@rdm3*int(ppp1,v)@} + {@rdm4*int(ppp2,v)@} + {@int(pp3,v)@}+c \\&\displaystyle =&\displaystyle {@rdm3*int(ppp1,v)+rdm4*int(ppp2,v)+int(pp3,v)@}+c
- \end{array}\] ]]></text>
+ \end{array}\]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
diff --git a/samplequestions/stacklibrary/Doc-Examples/D-L-distance.xml b/samplequestions/stacklibrary/Doc-Examples/D-L-distance.xml
index 81ed888254e80495924ea230577e3f34cd7e76aa..e2f3ad5dd6595f3ff9ff63bf762c54e18d8f7672 100644
--- a/samplequestions/stacklibrary/Doc-Examples/D-L-distance.xml
+++ b/samplequestions/stacklibrary/Doc-Examples/D-L-distance.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 12706 -->
<question type="stack">
<name>
<text>D-L distance</text>
@@ -10,12 +9,12 @@
<p>[[input:ans1]] [[validation:ans1]]</p>]]></text>
</questiontext>
<generalfeedback format="moodle_auto_format">
- <text></text>
+ <text/>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2024092500</text>
</stackversion>
@@ -32,7 +31,7 @@ ta:first(allow1);]]></text>
<text>[[feedback:prt1]]</text>
</specificfeedback>
<questionnote format="html">
- <text></text>
+ <text/>
</questionnote>
<questiondescription format="html">
<text>The purpose of this question is to illustrate using string match and the Levenshtein distance. This is the question outlined in the `Levenshtein distance` page of mathematical topics in the documentation. This can be found on your server at `[YOUR SERVER ADDRESS]/question/type/stack/doc/doc.php/Topics/Levenshtein_distance.md` .</text>
@@ -57,7 +56,7 @@ ta:first(allow1);]]></text>
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans1</name>
<type>string</type>
@@ -65,16 +64,16 @@ ta:first(allow1);]]></text>
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<prt>
<name>prt1</name>
@@ -82,7 +81,7 @@ ta:first(allow1);]]></text>
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
@@ -94,19 +93,19 @@ ta:first(allow1);]]></text>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -126,7 +125,7 @@ ta:first(allow1);]]></text>
</qtest>
<qtest>
<testcase>2</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value><![CDATA["Complete the square"]]></value>
@@ -140,7 +139,7 @@ ta:first(allow1);]]></text>
</qtest>
<qtest>
<testcase>3</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value><![CDATA["completed square"]]></value>
@@ -154,7 +153,7 @@ ta:first(allow1);]]></text>
</qtest>
<qtest>
<testcase>4</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value><![CDATA["sdfghjkyu ytrtedsfx"]]></value>
@@ -168,7 +167,7 @@ ta:first(allow1);]]></text>
</qtest>
<qtest>
<testcase>5</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value><![CDATA["Factoring"]]></value>
@@ -176,10 +175,9 @@ ta:first(allow1);]]></text>
<expected>
<name>prt1</name>
<expectedscore>0.0000000</expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedpenalty/>
<expectedanswernote>prt1-1-F</expectedanswernote>
</expected>
</qtest>
</question>
-
-</quiz>
\ No newline at end of file
+</quiz>
diff --git a/samplequestions/stacklibrary/Doc-Examples/Drag_and_drop-1-grouping.xml b/samplequestions/stacklibrary/Doc-Examples/Drag_and_drop-1-grouping.xml
index 1d6e1acd54173856dafba2187711d440bf84e446..352fd9a125b136ce477168340f61ba33e1c58fab 100644
--- a/samplequestions/stacklibrary/Doc-Examples/Drag_and_drop-1-grouping.xml
+++ b/samplequestions/stacklibrary/Doc-Examples/Drag_and_drop-1-grouping.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 12721 -->
<question type="stack">
<name>
<text>Drag and drop - 1 - grouping example</text>
@@ -18,12 +17,12 @@ Drag the functions to their appropriate category. </p>
<p>[[input:ans1]] [[validation:ans1]]</p>]]></text>
</questiontext>
<generalfeedback format="moodle_auto_format">
- <text></text>
+ <text/>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2024092500</text>
</stackversion>
@@ -93,7 +92,7 @@ wa: [
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans1</name>
<type>parsons</type>
@@ -101,16 +100,16 @@ wa: [
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<prt>
<name>prt1</name>
@@ -124,27 +123,27 @@ tans: match_column_set(ta);</text>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>sans</sans>
<tans>tans</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -168,7 +167,7 @@ tans: match_column_set(ta);</text>
</qtest>
<qtest>
<testcase>2</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value> apply(group_answer,[wa, steps])</value>
@@ -181,5 +180,4 @@ tans: match_column_set(ta);</text>
</expected>
</qtest>
</question>
-
-</quiz>
\ No newline at end of file
+</quiz>
diff --git a/samplequestions/stacklibrary/Doc-Examples/Drag_and_drop-2-Grid.xml b/samplequestions/stacklibrary/Doc-Examples/Drag_and_drop-2-Grid.xml
index d7626c76f425a4704b3b74b6a03fbd4b8812caa3..03652736d088789e052a4799054af76f16a13f7b 100644
--- a/samplequestions/stacklibrary/Doc-Examples/Drag_and_drop-2-Grid.xml
+++ b/samplequestions/stacklibrary/Doc-Examples/Drag_and_drop-2-Grid.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 12718 -->
<question type="stack">
<name>
<text>Drag and drop -2- Grid</text>
@@ -16,12 +15,12 @@
<p>[[input:ans1]] [[validation:ans1]]</p>]]></text>
</questiontext>
<generalfeedback format="moodle_auto_format">
- <text></text>
+ <text/>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2024092500</text>
</stackversion>
@@ -96,7 +95,7 @@ wa: [
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans1</name>
<type>parsons</type>
@@ -104,16 +103,16 @@ wa: [
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<prt>
<name>prt1</name>
@@ -127,27 +126,27 @@ tans: match_set_row(ta);</text>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>sans</sans>
<tans>tans</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -186,7 +185,7 @@ tans: match_set_row(ta);</text>
</qtest>
<qtest>
<testcase>3</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>apply(match_answer,[ta2, steps, 3])</value>
@@ -199,5 +198,4 @@ tans: match_set_row(ta);</text>
</expected>
</qtest>
</question>
-
-</quiz>
\ No newline at end of file
+</quiz>
diff --git a/samplequestions/stacklibrary/Doc-Examples/Drag_and_drop-3-Grid_with_index.xml b/samplequestions/stacklibrary/Doc-Examples/Drag_and_drop-3-Grid_with_index.xml
index 25a53e39c50c2be705db2dfbbcf6345ec589fda5..6a8429892f54d1bd9a0def52ce7f3bd66a27c9c2 100644
--- a/samplequestions/stacklibrary/Doc-Examples/Drag_and_drop-3-Grid_with_index.xml
+++ b/samplequestions/stacklibrary/Doc-Examples/Drag_and_drop-3-Grid_with_index.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 12723 -->
<question type="stack">
<name>
<text>Drag and drop - 3 - Grid with index</text>
@@ -17,12 +16,12 @@
<p>[[input:ans1]] [[validation:ans1]]</p>]]></text>
</questiontext>
<generalfeedback format="moodle_auto_format">
- <text></text>
+ <text/>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2024092500</text>
</stackversion>
@@ -95,7 +94,7 @@ wa: [
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans1</name>
<type>parsons</type>
@@ -103,16 +102,16 @@ wa: [
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<prt>
<name>prt1</name>
@@ -124,27 +123,27 @@ wa: [
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>sans</sans>
<tans>ta</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -182,5 +181,4 @@ wa: [
</expected>
</qtest>
</question>
-
-</quiz>
\ No newline at end of file
+</quiz>
diff --git a/samplequestions/stacklibrary/Doc-Examples/Drag_and_drop-4-Using-images.xml b/samplequestions/stacklibrary/Doc-Examples/Drag_and_drop-4-Using-images.xml
index 218de6c846e9559c9c4066c58dd0faaa87c521df..ab533783e34fa0d789fbaa823992622ee519ab01 100644
--- a/samplequestions/stacklibrary/Doc-Examples/Drag_and_drop-4-Using-images.xml
+++ b/samplequestions/stacklibrary/Doc-Examples/Drag_and_drop-4-Using-images.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 12728 -->
<question type="stack">
<name>
<text>Drag and drop - 4 - Using images</text>
@@ -16,12 +15,12 @@
<p>[[input:ans1]] [[validation:ans1]]</p>]]></text>
</questiontext>
<generalfeedback format="moodle_auto_format">
- <text></text>
+ <text/>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2024092500</text>
</stackversion>
@@ -57,9 +56,7 @@ ta: [
["f", "g"],
["dfdx", "dgdx"],
["df2d2x", "dg2d2x"]
-];
-
-]]></text>
+];]]></text>
</questionvariables>
<specificfeedback format="html">
<text>[[feedback:prt1]]</text>
@@ -90,7 +87,7 @@ ta: [
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans1</name>
<type>parsons</type>
@@ -98,10 +95,10 @@ ta: [
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
@@ -121,27 +118,27 @@ tans: match_set_row(ta);</text>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>sans</sans>
<tans>tans</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -166,7 +163,7 @@ tans: match_set_row(ta);</text>
</qtest>
<qtest>
<testcase>2</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value> apply(match_answer,[wa, steps, 3])</value>
@@ -179,5 +176,4 @@ tans: match_set_row(ta);</text>
</expected>
</qtest>
</question>
-
-</quiz>
\ No newline at end of file
+</quiz>
diff --git a/samplequestions/stacklibrary/Doc-Examples/GeoGebra.xml b/samplequestions/stacklibrary/Doc-Examples/GeoGebra.xml
index 91df6a159a8e9d2359c597ee372d60edfaf83981..ed94b65c1a7c8051a93b8ef9800a67935258bf61 100644
--- a/samplequestions/stacklibrary/Doc-Examples/GeoGebra.xml
+++ b/samplequestions/stacklibrary/Doc-Examples/GeoGebra.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 12654 -->
<question type="stack">
<name>
<text>GeoGebra - 1 - minimal question</text>
@@ -14,12 +13,12 @@
<span hidden="">[[input:ans1]][[validation:ans1]] [[input:remember]][[validation:remember]]</span>]]></text>
</questiontext>
<generalfeedback format="html">
- <text></text>
+ <text/>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2024092500</text>
</stackversion>
@@ -59,7 +58,7 @@ ta:-1/m;</text>
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans1</name>
<type>algebraic</type>
@@ -67,10 +66,10 @@ ta:-1/m;</text>
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>0</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
@@ -85,10 +84,10 @@ ta:-1/m;</text>
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
@@ -102,11 +101,11 @@ ta:-1/m;</text>
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>NumAbsolute</answertest>
<sans>ans1*m</sans>
<tans>-1</tans>
@@ -114,19 +113,19 @@ ta:-1/m;</text>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -156,14 +155,14 @@ ta:-1/m;</text>
</qtest>
<qtest>
<testcase>2</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>1/m</value>
</testinput>
<testinput>
<name>remember</name>
- <value></value>
+ <value/>
</testinput>
<expected>
<name>prt1</name>
@@ -173,5 +172,4 @@ ta:-1/m;</text>
</expected>
</qtest>
</question>
-
-</quiz>
\ No newline at end of file
+</quiz>
diff --git a/samplequestions/stacklibrary/Doc-Examples/Parsons-1-minimal.xml b/samplequestions/stacklibrary/Doc-Examples/Parsons-1-minimal.xml
index b2b33f9a3ec19fb0375fd377b073f0af45284071..85299882e3586b42660e066b093e4c78b63382a5 100644
--- a/samplequestions/stacklibrary/Doc-Examples/Parsons-1-minimal.xml
+++ b/samplequestions/stacklibrary/Doc-Examples/Parsons-1-minimal.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 12731 -->
<question type="stack">
<name>
<text>Parsons proofs 1- Minimal</text>
@@ -13,12 +12,12 @@
<p>[[input:ans1]] [[validation:ans1]]</p>]]></text>
</questiontext>
<generalfeedback format="moodle_auto_format">
- <text></text>
+ <text/>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2024092500</text>
</stackversion>
@@ -43,8 +42,7 @@ proof_steps: [
proof_steps: random_permutation(proof_steps);
/*a correct order, edit if changing question*/
-ta: proof("assume", "defn_rat", "defn_rat2", "defn_log", "defn_log2", "alg", "alg_int", "contra", "conc");
-]]></text>
+ta: proof("assume", "defn_rat", "defn_rat2", "defn_log", "defn_log2", "alg", "alg_int", "contra", "conc");]]></text>
</questionvariables>
<specificfeedback format="html">
<text>[[feedback:prt1]]</text>
@@ -75,7 +73,7 @@ ta: proof("assume", "defn_rat", "defn_rat2", "defn_log", "defn_log2", "alg", "al
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans1</name>
<type>parsons</type>
@@ -83,16 +81,16 @@ ta: proof("assume", "defn_rat", "defn_rat2", "defn_log", "defn_log2", "alg", "al
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<prt>
<name>prt1</name>
@@ -109,19 +107,19 @@ ta: proof("assume", "defn_rat", "defn_rat2", "defn_log", "defn_log2", "alg", "al
<answertest>AlgEquiv</answertest>
<sans>pd</sans>
<tans>0</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
@@ -158,10 +156,9 @@ ta: proof("assume", "defn_rat", "defn_rat2", "defn_log", "defn_log2", "alg", "al
<expected>
<name>prt1</name>
<expectedscore>0.0000000</expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedpenalty/>
<expectedanswernote>prt1-1-F</expectedanswernote>
</expected>
</qtest>
</question>
-
-</quiz>
\ No newline at end of file
+</quiz>
diff --git a/samplequestions/stacklibrary/Doc-Examples/Parsons-2-Interchangable-order.xml b/samplequestions/stacklibrary/Doc-Examples/Parsons-2-Interchangable-order.xml
index 24ac3986375fd79e88fd49e1c44142db1ba84138..f4d35523ab43a41c3bc043db09abab5ac708209d 100644
--- a/samplequestions/stacklibrary/Doc-Examples/Parsons-2-Interchangable-order.xml
+++ b/samplequestions/stacklibrary/Doc-Examples/Parsons-2-Interchangable-order.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 12734 -->
<question type="stack">
<name>
<text>parsons proof 2-Interchangable order</text>
@@ -25,7 +24,7 @@ Can you see the differences between these proofs?]]></text>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2024092500</text>
</stackversion>
@@ -94,7 +93,7 @@ tas: setify(map(proof_flatten, tal));]]></text>
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans1</name>
<type>parsons</type>
@@ -102,16 +101,16 @@ tas: setify(map(proof_flatten, tal));]]></text>
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<prt>
<name>prt1</name>
@@ -124,23 +123,23 @@ tas: setify(map(proof_flatten, tal));]]></text>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>pd</sans>
<tans>0</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
@@ -170,7 +169,7 @@ tas: setify(map(proof_flatten, tal));]]></text>
</qtest>
<qtest>
<testcase>2</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>apply(parsons_answer,[wa, proof_steps])</value>
@@ -183,5 +182,4 @@ tas: setify(map(proof_flatten, tal));]]></text>
</expected>
</qtest>
</question>
-
-</quiz>
\ No newline at end of file
+</quiz>
diff --git a/samplequestions/stacklibrary/Doc-Examples/Parsons-3-builder.xml b/samplequestions/stacklibrary/Doc-Examples/Parsons-3-builder.xml
index e9d535d954bd108c1f03a846e27f8f2c987587ec..f067345b4da8c6b83961808cfa30c1c178f5f0ef 100644
--- a/samplequestions/stacklibrary/Doc-Examples/Parsons-3-builder.xml
+++ b/samplequestions/stacklibrary/Doc-Examples/Parsons-3-builder.xml
@@ -1,107 +1,106 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 691 -->
<question type="stack">
<name>
<text>Parsons-feedback-builder</text>
</name>
<questiontext format="moodle_auto_format">
- <text><![CDATA[Let \(\displaystyle s_n=\sum_{r=1}^n r^3\). Prove by induction that \(s_n=n^2(n+1)^2/4\).
- [[parsons input="ans1"]]
-{# parsons_encode(proof_steps) #}
-[[/parsons ]]
-
+ <text><![CDATA[Let \(\displaystyle s_n=\sum_{r=1}^n r^3\). Prove by induction that \(s_n=n^2(n+1)^2/4\).
+ [[parsons input="ans1"]]
+{# parsons_encode(proof_steps) #}
+[[/parsons ]]
+
<p>[[input:ans1]] [[validation:ans1]]</p>]]></text>
</questiontext>
<generalfeedback format="moodle_auto_format">
- <text></text>
+ <text/>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2024092500</text>
</stackversion>
<questionvariables>
- <text><![CDATA[stack_include("contribl://prooflib.mac");
-stack_include("contribl://builder.mac");
-
-/* The proof-steps are common to all prooflib.mac questions. */
-/* For builder questions, the teacher answer field is a list
- * of lists of the form [skey, phrase, pos] where
- * phrase and skey are strings, and pos is a nonnegative integer.
- */
-proof_steps: [
- ["intro_P","Let \\(P(n)\\) be the statement that \\(s_n=n^2(n+1)^2/4\\).",1],
- ["base","Statement \\(P(1)\\) says that \\(s_1=1^22^2/4=1\\).",2],
- ["s_one","We also have \\(s_1=1^3=1\\), so \\(P(1)\\) is true.",3],
- ["intro_k","Now suppose that \\(P(k)\\) holds for some \\(k\\). We must show that \\(P(k+1)\\) also holds.",4],
- ["s_next","From the definition of \\(s_n\\), we have \\(s_{k+1}=s_k+(k+1)^3\\).",5],
- ["use_hyp",
- sconcat(
- "The induction hypothesis \\(P(k)\\) tells us that \\(s_k=k^2(k+1)^2/4\\), ",
- "so we can rewrite this as \\(s_{k+1}=k^2(k+1)^2/4+(k+1)^3\\)."
- ),6],
- ["rearrange",
- sconcat(
- "We can now rearrange this as ",
- "\\(s_{k+1}=\\frac{1}{4}(k+1)^2(k^2+4k+4)=\\frac{1}{4}(k+1)^2(k+2)^2\\), ",
- "which means that \\(P(k+1)\\) holds, as required."
- ),7],
- ["conclude","We have now proved the base case \\(P(1)\\) and the induction step \\(P(k)\\Rightarrow P(k+1)\\), so \\(P(n)\\) holds for all \\(n\\) by induction",8]
- ];
-/* We just create a "correct answer" from the steps above, as given. */
-ta:apply(proof,map(first, proof_steps));
-/* Create a wrong answer for testing. */
-wa1:apply(proof,map(first, rest(proof_steps)));
-
-
-/* The prules array below is used by the builder.mac feedback system. */
-prules : [
- ["needs",["base","s_one","step_setup","use_hyp","rearrange","conclude"],"intro_P",
- "You have used the symbol \\(P\\), but you have not defined it. You need to explain what \\(P(n)\\) means."
- ],
- ["needs",["use_hyp"],"intro_k",
- sconcat(
- "You seem to be assuming that \\(P(k)\\) holds, but you have not ",
- "explicitly stated or proved anything about that."
- )
- ],
- ["needs",["s_next","use_hyp","rearrange"],"intro_k",builder_needs_intro("k")],
- ["needs",["s_one"],"base",
- "Why is \\(P(1)\\) true? You need to spell out what \\(P(1)\\) says before you can prove it."
- ],
- ["needs_immediate",["use_hyp"],"s_next",
- sconcat(
- "You said: \"... so we can rewrite this ...\". What is the statement that ",
- "you want to rewrite? On the line directly before this one, you need to ",
- "have an equation involving \\(s_k\\), so that you can make the substitution ",
- "\\(s_k=k\\cdot 2^k\\) in that equation."
- )
- ],
- ["needs_immediate",["rearrange"],"use_hyp",
- sconcat(
- "You said: \"We can now rearrange this ...\". What is the statement that ",
- "you want to rearrange? On the line directly before this one, you need to ",
- "have an equation involving roughly the same ingredients as the desired ",
- "equation \\(s_{k+1}=(k+1)2^{k+1}\\)."
- )
- ],
- ["needs",["conclude"],"s_one",
- "You say that you have proved the base case \\(P(1)\\), but in fact you have not."
- ],
- ["needs",["conclude"],"rearrange",
- "You say that you have proved the induction step \\(P(k)\\Rightarrow P(k+1)\\), but in fact you have not."
- ],
- ["require",["conclude"],
- "This is needed to complete the proof."
- ]
- ];
-
-/* Below just creates random order for displaying the steps. */
-proof_steps:random_permutation(proof_steps);
-/* The parsons input must have lists of length exactly two, so we strip out the 3rs element. */
+ <text><![CDATA[stack_include("contribl://prooflib.mac");
+stack_include("contribl://builder.mac");
+
+/* The proof-steps are common to all prooflib.mac questions. */
+/* For builder questions, the teacher answer field is a list
+ * of lists of the form [skey, phrase, pos] where
+ * phrase and skey are strings, and pos is a nonnegative integer.
+ */
+proof_steps: [
+ ["intro_P","Let \\(P(n)\\) be the statement that \\(s_n=n^2(n+1)^2/4\\).",1],
+ ["base","Statement \\(P(1)\\) says that \\(s_1=1^22^2/4=1\\).",2],
+ ["s_one","We also have \\(s_1=1^3=1\\), so \\(P(1)\\) is true.",3],
+ ["intro_k","Now suppose that \\(P(k)\\) holds for some \\(k\\). We must show that \\(P(k+1)\\) also holds.",4],
+ ["s_next","From the definition of \\(s_n\\), we have \\(s_{k+1}=s_k+(k+1)^3\\).",5],
+ ["use_hyp",
+ sconcat(
+ "The induction hypothesis \\(P(k)\\) tells us that \\(s_k=k^2(k+1)^2/4\\), ",
+ "so we can rewrite this as \\(s_{k+1}=k^2(k+1)^2/4+(k+1)^3\\)."
+ ),6],
+ ["rearrange",
+ sconcat(
+ "We can now rearrange this as ",
+ "\\(s_{k+1}=\\frac{1}{4}(k+1)^2(k^2+4k+4)=\\frac{1}{4}(k+1)^2(k+2)^2\\), ",
+ "which means that \\(P(k+1)\\) holds, as required."
+ ),7],
+ ["conclude","We have now proved the base case \\(P(1)\\) and the induction step \\(P(k)\\Rightarrow P(k+1)\\), so \\(P(n)\\) holds for all \\(n\\) by induction",8]
+ ];
+/* We just create a "correct answer" from the steps above, as given. */
+ta:apply(proof,map(first, proof_steps));
+/* Create a wrong answer for testing. */
+wa1:apply(proof,map(first, rest(proof_steps)));
+
+
+/* The prules array below is used by the builder.mac feedback system. */
+prules : [
+ ["needs",["base","s_one","step_setup","use_hyp","rearrange","conclude"],"intro_P",
+ "You have used the symbol \\(P\\), but you have not defined it. You need to explain what \\(P(n)\\) means."
+ ],
+ ["needs",["use_hyp"],"intro_k",
+ sconcat(
+ "You seem to be assuming that \\(P(k)\\) holds, but you have not ",
+ "explicitly stated or proved anything about that."
+ )
+ ],
+ ["needs",["s_next","use_hyp","rearrange"],"intro_k",builder_needs_intro("k")],
+ ["needs",["s_one"],"base",
+ "Why is \\(P(1)\\) true? You need to spell out what \\(P(1)\\) says before you can prove it."
+ ],
+ ["needs_immediate",["use_hyp"],"s_next",
+ sconcat(
+ "You said: \"... so we can rewrite this ...\". What is the statement that ",
+ "you want to rewrite? On the line directly before this one, you need to ",
+ "have an equation involving \\(s_k\\), so that you can make the substitution ",
+ "\\(s_k=k\\cdot 2^k\\) in that equation."
+ )
+ ],
+ ["needs_immediate",["rearrange"],"use_hyp",
+ sconcat(
+ "You said: \"We can now rearrange this ...\". What is the statement that ",
+ "you want to rearrange? On the line directly before this one, you need to ",
+ "have an equation involving roughly the same ingredients as the desired ",
+ "equation \\(s_{k+1}=(k+1)2^{k+1}\\)."
+ )
+ ],
+ ["needs",["conclude"],"s_one",
+ "You say that you have proved the base case \\(P(1)\\), but in fact you have not."
+ ],
+ ["needs",["conclude"],"rearrange",
+ "You say that you have proved the induction step \\(P(k)\\Rightarrow P(k+1)\\), but in fact you have not."
+ ],
+ ["require",["conclude"],
+ "This is needed to complete the proof."
+ ]
+ ];
+
+/* Below just creates random order for displaying the steps. */
+proof_steps:random_permutation(proof_steps);
+/* The parsons input must have lists of length exactly two, so we strip out the 3rs element. */
ps:map(lambda([ex],[first(ex),second(ex)]),proof_steps);]]></text>
</questionvariables>
<specificfeedback format="html">
@@ -111,10 +110,10 @@ ps:map(lambda([ex],[first(ex),second(ex)]),proof_steps);]]></text>
<text>{#map(first,proof_steps)#}</text>
</questionnote>
<questiondescription format="html">
- <text>This question illustrates a general framework for questions that ask the student to construct a proof by selecting phrases from a given list and arranging them in order.
-
-The question author can specify various kinds of rules for generating feedback if the proof is invalid. Most of the logic is in a Maxima file `builder.mac` in the contrib directory,
-
+ <text>This question illustrates a general framework for questions that ask the student to construct a proof by selecting phrases from a given list and arranging them in order.
+
+The question author can specify various kinds of rules for generating feedback if the proof is invalid. Most of the logic is in a Maxima file `builder.mac` in the contrib directory,
+
The advantage is that teachers can mange meaningful feedback for individual steps, but of course that is more work than using the auto-generated feedback. As illustrated in this question, the auto-generated feedback can sit alongside the bespoke feedback generated by the builder library.</text>
</questiondescription>
<questionsimplify>1</questionsimplify>
@@ -137,7 +136,7 @@ The advantage is that teachers can mange meaningful feedback for individual step
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans1</name>
<type>parsons</type>
@@ -145,16 +144,16 @@ The advantage is that teachers can mange meaningful feedback for individual step
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<prt>
<name>prt1</name>
@@ -162,33 +161,33 @@ The advantage is that teachers can mange meaningful feedback for individual step
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text>sa: parsons_decode(ans1);
-[pd, saa]:proof_assessment(sa, proof_alternatives(ta));
+ <text>sa: parsons_decode(ans1);
+[pd, saa]:proof_assessment(sa, proof_alternatives(ta));
[sc,an,fb]:builder_check_rules(sa,proof_steps,prules);</text>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>pd</sans>
<tans>0</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
- <text>{@fb@}
+ <text>{@fb@}
{@proof_assessment_display(saa, proof_steps)@}</text>
</falsefeedback>
</node>
@@ -227,5 +226,4 @@ The advantage is that teachers can mange meaningful feedback for individual step
</expected>
</qtest>
</question>
-
-</quiz>
\ No newline at end of file
+</quiz>
diff --git a/samplequestions/stacklibrary/Features/MCQ-example-multiselqnalpha.xml b/samplequestions/stacklibrary/Features/MCQ-example-multiselqnalpha.xml
index c664cb2dd12bc687e277103bc230d36160364c3e..b7ebeb7e8fa833919db16935519f89bae0650be2 100644
--- a/samplequestions/stacklibrary/Features/MCQ-example-multiselqnalpha.xml
+++ b/samplequestions/stacklibrary/Features/MCQ-example-multiselqnalpha.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 12808 -->
<question type="stack">
<name>
<text>MCQ_example_multiselqnalpha</text>
@@ -10,12 +9,12 @@
<p>[[input:ans1]] [[validation:ans1]]</p>]]></text>
</questiontext>
<generalfeedback format="html">
- <text></text>
+ <text/>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2024092500</text>
</stackversion>
@@ -58,7 +57,7 @@ corr1:mcq_correct(ta1);</text>
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans1</name>
<type>checkbox</type>
@@ -66,16 +65,16 @@ corr1:mcq_correct(ta1);</text>
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<prt>
<name>prt1</name>
@@ -83,31 +82,31 @@ corr1:mcq_correct(ta1);</text>
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>Sets</answertest>
<sans>setify(ans1)</sans>
<tans>setify(corr1)</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -133,7 +132,7 @@ corr1:mcq_correct(ta1);</text>
<deployedseed>357901509</deployedseed>
<qtest>
<testcase>1</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>corr1</value>
@@ -147,7 +146,7 @@ corr1:mcq_correct(ta1);</text>
</qtest>
<qtest>
<testcase>2</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>[corr1[1]]</value>
@@ -160,5 +159,4 @@ corr1:mcq_correct(ta1);</text>
</expected>
</qtest>
</question>
-
-</quiz>
\ No newline at end of file
+</quiz>
diff --git a/samplequestions/stacklibrary/Features/MCQ-example.xml b/samplequestions/stacklibrary/Features/MCQ-example.xml
index cd4105a90d0b0767d353ea62eb42622a59fe0428..45faa81c9ed73e92e781957fb8d63c9aa19af467 100644
--- a/samplequestions/stacklibrary/Features/MCQ-example.xml
+++ b/samplequestions/stacklibrary/Features/MCQ-example.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 12805 -->
<question type="stack">
<name>
<text>MCQ_example_Remainder Theorem T/F</text>
@@ -10,12 +9,12 @@
[[input:ans1]] [[validation:ans1]]]]></text>
</questiontext>
<generalfeedback format="html">
- <text></text>
+ <text/>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2024092500</text>
</stackversion>
@@ -43,9 +42,7 @@ statements:makelist([sconcat("(",ascii(96+i),")"),statements[i][1],statements[i]
statements:maplist(lambda([ex],[ex[1],ex[2],sconcat("<b>",ex[1],"</b> ",ex[3])]),statements);
/* Produce lists of correct and incorrect statements: */
tans:mcq_correct(statements);
-incorr:maplist(first, sublist(statements, lambda([ex], not(second(ex)))));
-
-]]></text>
+incorr:maplist(first, sublist(statements, lambda([ex], not(second(ex)))));]]></text>
</questionvariables>
<specificfeedback format="html">
<text>[[feedback:prt1]]</text>
@@ -77,7 +74,7 @@ The marking counts the number correct and the number incorrect. You are then ab
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans1</name>
<type>checkbox</type>
@@ -85,16 +82,16 @@ The marking counts the number correct and the number incorrect. You are then ab
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>1</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<prt>
<name>prt1</name>
@@ -108,8 +105,7 @@ The marking counts the number correct and the number incorrect. You are then ab
PRT score fields can be variables so, should you choose to, and use that value to assign a score.
*/
-nocorrect:cardinality(intersection(setify(tans),setify(ans1)));
-]]></text>
+nocorrect:cardinality(intersection(setify(tans),setify(ans1)));]]></text>
</feedbackvariables>
<node>
<name>0</name>
@@ -117,7 +113,7 @@ nocorrect:cardinality(intersection(setify(tans),setify(ans1)));
<answertest>Sets</answertest>
<sans>setify(ans1)</sans>
<tans>setify(tans)</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
@@ -125,7 +121,7 @@ nocorrect:cardinality(intersection(setify(tans),setify(ans1)));
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-0-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
@@ -171,10 +167,9 @@ nocorrect:cardinality(intersection(setify(tans),setify(ans1)));
<expected>
<name>prt1</name>
<expectedscore>0.0000000</expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedpenalty/>
<expectedanswernote>prt1-0-F</expectedanswernote>
</expected>
</qtest>
</question>
-
-</quiz>
\ No newline at end of file
+</quiz>
diff --git a/samplequestions/stacklibrary/Features/Reveal_block_example.xml b/samplequestions/stacklibrary/Features/Reveal_block_example.xml
index 7b8a37d784e00322a0125a33add0c0cadc7204a7..5ea9bd0a09d09fbf52ff2fcab9b19babc48ed41a 100644
--- a/samplequestions/stacklibrary/Features/Reveal_block_example.xml
+++ b/samplequestions/stacklibrary/Features/Reveal_block_example.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 4564 -->
<question type="stack">
<name>
<text>Subspace (reveal example)</text>
@@ -38,7 +37,7 @@ For example, \(w_1 = \) [[input:answ1]] [[validation:answ1]] is in \(W\) and
<defaultgrade>3</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2023051500</text>
</stackversion>
@@ -67,13 +66,13 @@ taw1:transpose(matrix([null,null,null]));
taw2:null;</text>
</questionvariables>
<specificfeedback format="html">
- <text></text>
+ <text/>
</specificfeedback>
- <questionnote>
+ <questionnote format="html">
<text>{@Ws@}</text>
</questionnote>
<questiondescription format="html">
- <text></text>
+ <text/>
</questiondescription>
<questionsimplify>1</questionsimplify>
<assumepositive>0</assumepositive>
@@ -87,13 +86,15 @@ taw2:null;</text>
<prtincorrect format="html">
<text><![CDATA[<span style="font-size: 1.5em; color:red;"><i class="fa fa-times"></i></span> Incorrect answer.]]></text>
</prtincorrect>
+ <decimals>.</decimals>
+ <scientificnotation>*10</scientificnotation>
<multiplicationsign>none</multiplicationsign>
<sqrtsign>1</sqrtsign>
<complexno>i</complexno>
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans0</name>
<type>boolean</type>
@@ -101,16 +102,16 @@ taw2:null;</text>
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans1</name>
@@ -119,16 +120,16 @@ taw2:null;</text>
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans2</name>
@@ -137,16 +138,16 @@ taw2:null;</text>
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>5</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>1</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans3</name>
@@ -157,14 +158,14 @@ taw2:null;</text>
<insertstars>5</insertstars>
<syntaxhint>[?, ...]</syntaxhint>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>1</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ansv1</name>
@@ -173,16 +174,16 @@ taw2:null;</text>
<boxsize>2</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>5</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ansv2</name>
@@ -191,16 +192,16 @@ taw2:null;</text>
<boxsize>2</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>5</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>answ1</name>
@@ -209,16 +210,16 @@ taw2:null;</text>
<boxsize>3</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>5</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>answ2</name>
@@ -227,16 +228,16 @@ taw2:null;</text>
<boxsize>3</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>5</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<prt>
<name>prt1</name>
@@ -244,7 +245,7 @@ taw2:null;</text>
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
@@ -252,11 +253,11 @@ taw2:null;</text>
<answertest>AlgEquiv</answertest>
<sans>ans1</sans>
<tans>issubspace</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
@@ -264,7 +265,7 @@ taw2:null;</text>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
@@ -283,19 +284,19 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans1</sans>
<tans>true</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>1</truenextnode>
<trueanswernote>prt2-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
@@ -308,23 +309,23 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>deg</sans>
<tans>1</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>+</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>2</truenextnode>
<trueanswernote>prt2-2-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt2-2-F</falseanswernote>
<falsefeedback format="html">
@@ -333,23 +334,23 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
</node>
<node>
<name>2</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>point_in_space(ans2, matrix([0],[0],[0]))</sans>
<tans>true</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>+</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>3</truenextnode>
<trueanswernote>prt2-3-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt2-3-F</falseanswernote>
<falsefeedback format="html">
@@ -358,27 +359,27 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
</node>
<node>
<name>3</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>cspace(ans2)</sans>
<tans>cspace(Ws)</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt2-4-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt2-4-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -388,23 +389,23 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans1</sans>
<tans>false</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>1</truenextnode>
<trueanswernote>prt3-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
@@ -417,15 +418,15 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans0</sans>
<tans>not(point_in_space(Ws,matrix([0],[0],[0])))</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt3-2-T</trueanswernote>
<truefeedback format="html">
@@ -433,7 +434,7 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt3-2-F</falseanswernote>
<falsefeedback format="html">
@@ -447,27 +448,27 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans1</sans>
<tans>false</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>1</truenextnode>
<trueanswernote>prt4-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt4-1-F</falseanswernote>
<falsefeedback format="html">
@@ -476,23 +477,23 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>point_in_space(Ws,ansv1)</sans>
<tans>true</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>+</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>2</truenextnode>
<trueanswernote>prt4-2-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt4-2-F</falseanswernote>
<falsefeedback format="html">
@@ -501,23 +502,23 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
</node>
<node>
<name>2</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>point_in_space(Ws,ansv2)</sans>
<tans>true</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>3</truenextnode>
<trueanswernote>prt4-3-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt4-3-F</falseanswernote>
<falsefeedback format="html">
@@ -526,15 +527,15 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
</node>
<node>
<name>3</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>point_in_space(Ws,ansv1+ansv2)</sans>
<tans>false</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt4-4-T</trueanswernote>
<truefeedback format="html">
@@ -542,7 +543,7 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt4-4-F</falseanswernote>
<falsefeedback format="html">
@@ -556,27 +557,27 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans1</sans>
<tans>false</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>1</truenextnode>
<trueanswernote>prt5-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt5-1-F</falseanswernote>
<falsefeedback format="html">
@@ -585,23 +586,23 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>point_in_space(Ws,answ1)</sans>
<tans>true</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>+</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>2</truenextnode>
<trueanswernote>prt5-2-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt5-2-F</falseanswernote>
<falsefeedback format="html">
@@ -610,15 +611,15 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
</node>
<node>
<name>2</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>point_in_space(Ws,answ2*answ1)</sans>
<tans>false</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt5-3-T</trueanswernote>
<truefeedback format="html">
@@ -626,7 +627,7 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt5-3-F</falseanswernote>
<falsefeedback format="html">
@@ -636,10 +637,10 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
</prt>
<qtest>
<testcase>1</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans0</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ans1</name>
@@ -655,19 +656,19 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
</testinput>
<testinput>
<name>ansv1</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ansv2</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>answ1</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>answ2</name>
- <value></value>
+ <value/>
</testinput>
<expected>
<name>prt1</name>
@@ -683,29 +684,29 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
</expected>
<expected>
<name>prt3</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
<expected>
<name>prt4</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
<expected>
<name>prt5</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
</qtest>
<qtest>
<testcase>2</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans0</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ans1</name>
@@ -721,19 +722,19 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
</testinput>
<testinput>
<name>ansv1</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ansv2</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>answ1</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>answ2</name>
- <value></value>
+ <value/>
</testinput>
<expected>
<name>prt1</name>
@@ -749,29 +750,29 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
</expected>
<expected>
<name>prt3</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
<expected>
<name>prt4</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
<expected>
<name>prt5</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
</qtest>
<qtest>
<testcase>3</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans0</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ans1</name>
@@ -787,19 +788,19 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
</testinput>
<testinput>
<name>ansv1</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ansv2</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>answ1</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>answ2</name>
- <value></value>
+ <value/>
</testinput>
<expected>
<name>prt1</name>
@@ -810,31 +811,31 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
<expected>
<name>prt2</name>
<expectedscore>0.0000000</expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedpenalty/>
<expectedanswernote>prt2-4-F</expectedanswernote>
</expected>
<expected>
<name>prt3</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
<expected>
<name>prt4</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
<expected>
<name>prt5</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
</qtest>
<qtest>
<testcase>4</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans0</name>
<value>true</value>
@@ -845,7 +846,7 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
</testinput>
<testinput>
<name>ans2</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ans3</name>
@@ -853,19 +854,19 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
</testinput>
<testinput>
<name>ansv1</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ansv2</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>answ1</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>answ2</name>
- <value></value>
+ <value/>
</testinput>
<expected>
<name>prt1</name>
@@ -875,8 +876,8 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
</expected>
<expected>
<name>prt2</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
<expected>
@@ -887,20 +888,20 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
</expected>
<expected>
<name>prt4</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
<expected>
<name>prt5</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
</qtest>
<qtest>
<testcase>5</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans0</name>
<value>false</value>
@@ -911,7 +912,7 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
</testinput>
<testinput>
<name>ans2</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ans3</name>
@@ -919,19 +920,19 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
</testinput>
<testinput>
<name>ansv1</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ansv2</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>answ1</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>answ2</name>
- <value></value>
+ <value/>
</testinput>
<expected>
<name>prt1</name>
@@ -941,8 +942,8 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
</expected>
<expected>
<name>prt2</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
<expected>
@@ -954,10 +955,10 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
</qtest>
<qtest>
<testcase>6</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans0</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ans1</name>
@@ -965,7 +966,7 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
</testinput>
<testinput>
<name>ans2</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ans3</name>
@@ -995,14 +996,14 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
</expected>
<expected>
<name>prt2</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
<expected>
<name>prt3</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
<expected>
@@ -1031,7 +1032,7 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
</testinput>
<testinput>
<name>ans2</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ans3</name>
@@ -1039,51 +1040,50 @@ deg:apply(max, maplist(lambda([ex], hipow(ans2, ex)), lv));</text>
</testinput>
<testinput>
<name>ansv1</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ansv2</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>answ1</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>answ2</name>
- <value></value>
+ <value/>
</testinput>
<expected>
<name>prt1</name>
<expectedscore>0.0000000</expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedpenalty/>
<expectedanswernote>prt1-1-F</expectedanswernote>
</expected>
<expected>
<name>prt2</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
<expected>
<name>prt3</name>
<expectedscore>0.0000000</expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedpenalty/>
<expectedanswernote>prt3-2-F</expectedanswernote>
</expected>
<expected>
<name>prt4</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
<expected>
<name>prt5</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
</qtest>
</question>
-
-</quiz>
\ No newline at end of file
+</quiz>
diff --git a/samplequestions/stacklibrary/Features/Scientific-units.xml b/samplequestions/stacklibrary/Features/Scientific-units.xml
index 5bd188f9b9a1b9486d20b6f654ef4f9af7aeb339..e1822ef0e2c4b1d1a75f872e9bc0d639010a33d7 100644
--- a/samplequestions/stacklibrary/Features/Scientific-units.xml
+++ b/samplequestions/stacklibrary/Features/Scientific-units.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 12693 -->
<question type="stack">
<name>
<text>Scientific units</text>
@@ -10,12 +9,12 @@
<p>[[input:ans1]] [[validation:ans1]]</p>]]></text>
</questiontext>
<generalfeedback format="moodle_auto_format">
- <text></text>
+ <text/>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2024092500</text>
</stackversion>
@@ -62,7 +61,7 @@ uw2: stackunits((len*width)/100,m^2);</text>
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans1</name>
<type>units</type>
@@ -70,10 +69,10 @@ uw2: stackunits((len*width)/100,m^2);</text>
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>0</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
@@ -87,11 +86,11 @@ uw2: stackunits((len*width)/100,m^2);</text>
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>UnitsStrictAbsolute</answertest>
<sans>ans1</sans>
<tans>ta1</tans>
@@ -99,24 +98,24 @@ uw2: stackunits((len*width)/100,m^2);</text>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>1</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>UnitsAbsolute</answertest>
<sans>ans1</sans>
<tans>ta1</tans>
@@ -124,7 +123,7 @@ uw2: stackunits((len*width)/100,m^2);</text>
<quiet>1</quiet>
<truescoremode>+</truescoremode>
<truescore>0.5</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-2-T</trueanswernote>
<truefeedback format="html">
@@ -132,16 +131,16 @@ uw2: stackunits((len*width)/100,m^2);</text>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>2</falsenextnode>
<falseanswernote>prt1-2-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>2</name>
- <description></description>
+ <description/>
<answertest>UnitsAbsolute</answertest>
<sans>ans1</sans>
<tans>uw2</tans>
@@ -149,7 +148,7 @@ uw2: stackunits((len*width)/100,m^2);</text>
<quiet>0</quiet>
<truescoremode>+</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-3-T</trueanswernote>
<truefeedback format="html">
@@ -157,11 +156,11 @@ uw2: stackunits((len*width)/100,m^2);</text>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-3-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -189,7 +188,7 @@ uw2: stackunits((len*width)/100,m^2);</text>
</qtest>
<qtest>
<testcase>2</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>uw2</value>
@@ -203,7 +202,7 @@ uw2: stackunits((len*width)/100,m^2);</text>
</qtest>
<qtest>
<testcase>3</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>uw1</value>
@@ -216,5 +215,4 @@ uw2: stackunits((len*width)/100,m^2);</text>
</expected>
</qtest>
</question>
-
-</quiz>
\ No newline at end of file
+</quiz>
diff --git a/samplequestions/stacklibrary/General-maths-questions/First-Order-ODE/Differential_Equation_3.xml b/samplequestions/stacklibrary/General-maths-questions/First-Order-ODE/Differential_Equation_3.xml
index 2bd9aae267b9caec2ee70d6d5d4bfc8298e88cf4..db49466b86e8aafe1e4b54173273f09a73a297e8 100644
--- a/samplequestions/stacklibrary/General-maths-questions/First-Order-ODE/Differential_Equation_3.xml
+++ b/samplequestions/stacklibrary/General-maths-questions/First-Order-ODE/Differential_Equation_3.xml
@@ -25,8 +25,7 @@ correctanswer2:sqrt(n1)*tanh(sqrt(n1)*(n2*x+x^3/3)+c);
wronganswer1:sqrt(n1)*tanh(sqrt(n1)*(n2*x+x^3/3+p));
wronganswer2:sqrt(n1)*tanh(sqrt(n1)*(n2*x+x^3/3));
wronganswer3:rat(exponentialize(correctanswer));
-wronganswer4:sqrt(n1)*tanh(sqrt(n1)*(n2*x+x^3/3)+p);
-</text>
+wronganswer4:sqrt(n1)*tanh(sqrt(n1)*(n2*x+x^3/3)+p);</text>
</questionvariables>
<specificfeedback format="html">
<text><![CDATA[<p>[[feedback:Result]]</p>]]></text>
diff --git a/samplequestions/stacklibrary/Topics/Complex_cube_roots.xml b/samplequestions/stacklibrary/Topics/Complex_cube_roots.xml
index c101d787304b38710f3b0b4866226fe4e9f2cc97..30b0e6c2d09cacf9afdcd7e24e49e119fc57688f 100644
--- a/samplequestions/stacklibrary/Topics/Complex_cube_roots.xml
+++ b/samplequestions/stacklibrary/Topics/Complex_cube_roots.xml
@@ -1,158 +1,157 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 12793 -->
<question type="stack">
<name>
<text>Complex roots/unsorted multi-input answers</text>
</name>
<questiontext format="html">
- <text><![CDATA[<p>
-a) Convert the number \(z={@z@}\) to polar coordinates, i.e. write the number as \(z = r\, e^{\mathrm i\, \theta} = r\, \exp(\mathrm i\, \theta)\). The argument \(\theta\) should be given in radians and as the principal value, i.e. \(-\pi < \theta \le \pi\).
-</p>
-<p>
-b) Find the three different roots \(u_1\), \(u_2\) or \(u_3\) of \(z\), where. \(u_1^3 = u_2^3 = u_3^3 = z\), but \(u_1 \neq u_2\), \(u_2 \neq u_3\), \(u_3 \neq u_1\).
-</p>
-<p>
-<strong>Answers:</strong> Give all answers exactly! The answers in b) must also be given in polar form.
- The easiest way to enter the exponential function is as <code>exp()</code>.
-</p>
-<p>
-Example: \(\dfrac{6}{5}\, \exp\left(\dfrac{\mathrm i\, \pi}{7}\right) = \dfrac{6}{5}\, e^{\frac{\mathrm i\, \pi}{7}}\) is entered as <code>(6/5)*exp(%i*%pi/7)</code>.
-</p>
-
-<table>
- <tbody>
- <tr>
- <td>a)</td>
- <td>\(z =~\)[[input:SAns1]]\(\, \exp(\)[[input:SAns2]]\(\, \mathrm{i})\)</td>
- </tr>
- <tr>
- <td></td>
- <td>[[validation:SAns1]]</td>
- <td>[[validation:SAns2]]</td>
- </tr>
- </tbody>
-</table>
-
-<table>
- <tbody>
- <tr>
- <td>b)</td>
- <td>\(u_1 =~\)[[input:SAns3]]</td>
- <td>[[validation:SAns3]] [[feedback:prt3]]</td>
- </tr>
- <tr>
- <td></td>
- <td>\(u_2 =~\)[[input:SAns4]]</td>
- <td>[[validation:SAns4]] [[feedback:prt4]]</td>
- </tr>
- <tr>
- <td></td>
- <td>\(u_3 =~\)[[input:SAns5]]</td>
- <td>[[validation:SAns5]][[feedback:prt5]]</td>
- </tr>
- </tbody>
+ <text><![CDATA[<p>
+a) Convert the number \(z={@z@}\) to polar coordinates, i.e. write the number as \(z = r\, e^{\mathrm i\, \theta} = r\, \exp(\mathrm i\, \theta)\). The argument \(\theta\) should be given in radians and as the principal value, i.e. \(-\pi < \theta \le \pi\).
+</p>
+<p>
+b) Find the three different roots \(u_1\), \(u_2\) or \(u_3\) of \(z\), where. \(u_1^3 = u_2^3 = u_3^3 = z\), but \(u_1 \neq u_2\), \(u_2 \neq u_3\), \(u_3 \neq u_1\).
+</p>
+<p>
+<strong>Answers:</strong> Give all answers exactly! The answers in b) must also be given in polar form.
+ The easiest way to enter the exponential function is as <code>exp()</code>.
+</p>
+<p>
+Example: \(\dfrac{6}{5}\, \exp\left(\dfrac{\mathrm i\, \pi}{7}\right) = \dfrac{6}{5}\, e^{\frac{\mathrm i\, \pi}{7}}\) is entered as <code>(6/5)*exp(%i*%pi/7)</code>.
+</p>
+
+<table>
+ <tbody>
+ <tr>
+ <td>a)</td>
+ <td>\(z =~\)[[input:SAns1]]\(\, \exp(\)[[input:SAns2]]\(\, \mathrm{i})\)</td>
+ </tr>
+ <tr>
+ <td></td>
+ <td>[[validation:SAns1]]</td>
+ <td>[[validation:SAns2]]</td>
+ </tr>
+ </tbody>
+</table>
+
+<table>
+ <tbody>
+ <tr>
+ <td>b)</td>
+ <td>\(u_1 =~\)[[input:SAns3]]</td>
+ <td>[[validation:SAns3]] [[feedback:prt3]]</td>
+ </tr>
+ <tr>
+ <td></td>
+ <td>\(u_2 =~\)[[input:SAns4]]</td>
+ <td>[[validation:SAns4]] [[feedback:prt4]]</td>
+ </tr>
+ <tr>
+ <td></td>
+ <td>\(u_3 =~\)[[input:SAns5]]</td>
+ <td>[[validation:SAns5]][[feedback:prt5]]</td>
+ </tr>
+ </tbody>
</table>]]></text>
</questiontext>
<generalfeedback format="html">
- <text><![CDATA[<p>a) When a complex number is expressed in polar form, \(r\) is the distance from the origin, which is the same as
-\[\lvert z \rvert=\sqrt{0^2+\left({@radius@}\right)^2}={@radius@}.\]
-</p>
-
-<p>The argument \(\theta\) is given by the angle between the positive real axis and the vector from the origin to \(z\), with the requirement \(-\pi < \theta \leq \pi\).
-We can immediately see from the sign of \(z\) that \(\theta = \displaystyle {@arg_z@}\), since the real part is \(0\).</p>
-<p>Now we can write \(z\) in polar form: \[z = {@radius@} \, e^{ {@arg_z@} \, \mathrm i }\]</p>
-
-<p>b) Using the following formula, we can then calculate the complex \(n\):th roots:</p>
-<p>\[\sqrt[n]{z} = \sqrt[n]{r} \,\exp\left( \mathrm i\,\frac{\theta + 2k\pi}{n}\right), \quad k = 0, 1, \dots , n-1.\]</p>
-
-<p>With \(k=0\) we get
-\[\begin{split} u_1 &= \sqrt[3]{{@radius@}} \exp\left( \mathrm i\, \frac{{@arg_z@}}{3} \right) \\
-&= {@polarform_simp(u1)@}.
-\end{split}\]</p>
-
-<p>Similarly with \(k=1\) we get
-\[\begin{split} u_2 &= \sqrt[3]{{@radius@}} \exp \left( \mathrm i\, \frac{{@arg_z@} + 2\pi}{3}\right) \\
-&= {@polarform_simp(u2)@},
-\end{split}\]
-</p>
-<p>and with \(k=2\):
-\[\begin{split} u_3 &= \sqrt[3]{{@radius@}}\exp \left( \mathrm i \, \frac{{@arg_z@} + 4\pi}{3}\right) \\
-&= {@polarform_simp(u3)@}.
+ <text><![CDATA[<p>a) When a complex number is expressed in polar form, \(r\) is the distance from the origin, which is the same as
+\[\lvert z \rvert=\sqrt{0^2+\left({@radius@}\right)^2}={@radius@}.\]
+</p>
+
+<p>The argument \(\theta\) is given by the angle between the positive real axis and the vector from the origin to \(z\), with the requirement \(-\pi < \theta \leq \pi\).
+We can immediately see from the sign of \(z\) that \(\theta = \displaystyle {@arg_z@}\), since the real part is \(0\).</p>
+<p>Now we can write \(z\) in polar form: \[z = {@radius@} \, e^{ {@arg_z@} \, \mathrm i }\]</p>
+
+<p>b) Using the following formula, we can then calculate the complex \(n\):th roots:</p>
+<p>\[\sqrt[n]{z} = \sqrt[n]{r} \,\exp\left( \mathrm i\,\frac{\theta + 2k\pi}{n}\right), \quad k = 0, 1, \dots , n-1.\]</p>
+
+<p>With \(k=0\) we get
+\[\begin{split} u_1 &= \sqrt[3]{{@radius@}} \exp\left( \mathrm i\, \frac{{@arg_z@}}{3} \right) \\
+&= {@polarform_simp(u1)@}.
+\end{split}\]</p>
+
+<p>Similarly with \(k=1\) we get
+\[\begin{split} u_2 &= \sqrt[3]{{@radius@}} \exp \left( \mathrm i\, \frac{{@arg_z@} + 2\pi}{3}\right) \\
+&= {@polarform_simp(u2)@},
+\end{split}\]
+</p>
+<p>and with \(k=2\):
+\[\begin{split} u_3 &= \sqrt[3]{{@radius@}}\exp \left( \mathrm i \, \frac{{@arg_z@} + 4\pi}{3}\right) \\
+&= {@polarform_simp(u3)@}.
\end{split}\]</p>]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2024092500</text>
</stackversion>
<questionvariables>
- <text>numerator : rand([2,3,5,7,11,13]);
-denominator : rand_with_prohib(2,13, [numerator, numerator*2, numerator*3]);
-radius: ev((numerator/denominator)^3,simp);
-arg_z: rand([-pi/2, pi/2]);
-zPar: radius*exp(arg_z*%i);
-polar_z: polarform(zPar);
-z:ev(zPar,simp);
-
-arg1: arg_z/3;
-arg2: arg1+(1*2*pi/3);
-arg3: arg1+(2*2*pi/3);
-
-u1: ev(radius^(1/3)*exp(arg1*%i),simp);
-u2: ev(radius^(1/3)*exp(arg2*%i),simp);
-u3: ev(radius^(1/3)*exp(arg3*%i),simp);
-
-/* Kuvaa varten muuttujia: */
-xmin: -radius*1.5;
-ymin: xmin;
-xmax: radius*1.5;
-ymax: xmax;
-r:radius;
-xangle_startp: ev(r/2,simp);
-yangle_endp: ev(imagpart(z)/2,simp);
-
-startx : if (arg_z = pi/2) then radius/2 else 0;
-starty : if (arg_z = pi/2) then 0 else imagpart(zPar)/2;
-endx : if (arg_z = pi/2) then 0 else radius/2;
-endy : if (arg_z = pi/2) then imagpart(zPar)/2 else 0;
-
-Tans1 : radius;
-Tans2 : arg_z;
-Tans3 : polarform_simp(u1);
-Tans4 : polarform_simp(u2);
-Tans5 : polarform_simp(u3);
-
-Twrong1 : ev(radius/3,simp);
-Twrong2 : ev(arg_z*2,simp);
-/* Not a root. */
-Twrong3 : polarform_simp(Tans3*2);
-/* A root, but not the right form. */
-Twrong4 : ev(ratsimp(Tans4),simp);
-/* Both properties wrong! */
+ <text>numerator : rand([2,3,5,7,11,13]);
+denominator : rand_with_prohib(2,13, [numerator, numerator*2, numerator*3]);
+radius: ev((numerator/denominator)^3,simp);
+arg_z: rand([-pi/2, pi/2]);
+zPar: radius*exp(arg_z*%i);
+polar_z: polarform(zPar);
+z:ev(zPar,simp);
+
+arg1: arg_z/3;
+arg2: arg1+(1*2*pi/3);
+arg3: arg1+(2*2*pi/3);
+
+u1: ev(radius^(1/3)*exp(arg1*%i),simp);
+u2: ev(radius^(1/3)*exp(arg2*%i),simp);
+u3: ev(radius^(1/3)*exp(arg3*%i),simp);
+
+/* Kuvaa varten muuttujia: */
+xmin: -radius*1.5;
+ymin: xmin;
+xmax: radius*1.5;
+ymax: xmax;
+r:radius;
+xangle_startp: ev(r/2,simp);
+yangle_endp: ev(imagpart(z)/2,simp);
+
+startx : if (arg_z = pi/2) then radius/2 else 0;
+starty : if (arg_z = pi/2) then 0 else imagpart(zPar)/2;
+endx : if (arg_z = pi/2) then 0 else radius/2;
+endy : if (arg_z = pi/2) then imagpart(zPar)/2 else 0;
+
+Tans1 : radius;
+Tans2 : arg_z;
+Tans3 : polarform_simp(u1);
+Tans4 : polarform_simp(u2);
+Tans5 : polarform_simp(u3);
+
+Twrong1 : ev(radius/3,simp);
+Twrong2 : ev(arg_z*2,simp);
+/* Not a root. */
+Twrong3 : polarform_simp(Tans3*2);
+/* A root, but not the right form. */
+Twrong4 : ev(ratsimp(Tans4),simp);
+/* Both properties wrong! */
Twrong5 : Tans5*4;</text>
</questionvariables>
<specificfeedback format="html">
- <text><![CDATA[<p>a)</p>
-<p>[[feedback:prt1]]</p>
-<p>b)</p>
+ <text><![CDATA[<p>a)</p>
+<p>[[feedback:prt1]]</p>
+<p>b)</p>
<p>[[feedback:prt2]]</p>]]></text>
</specificfeedback>
<questionnote format="html">
- <text><![CDATA[Write \(z={@zPar@}={@z@}\) in polar form. Answer: \({@radius@} \, e^{{@arg_z@} \, \mathrm i}\). <br>
-Determine the three roots \(\sqrt[3]{z}\).<br>
+ <text><![CDATA[Write \(z={@zPar@}={@z@}\) in polar form. Answer: \({@radius@} \, e^{{@arg_z@} \, \mathrm i}\). <br>
+Determine the three roots \(\sqrt[3]{z}\).<br>
Answer: \(u_1 = {@polarform_simp(u1)@}\), \(u_2 = {@polarform_simp(u2)@}\) and \(u_3 = {@polarform_simp(u3)@}\).]]></text>
</questionnote>
<questiondescription format="moodle_auto_format">
- <text><![CDATA[This question has two interesting aspects.
-
-1. It deals with complex numbers in polar form.
-2. The answer is an example of "unsorted multi-input answers". That is, we end up with a set of solutions at the end, and we want to decide that all are solutions, and all solutions are given!
-
-To deal with this, the last three inputs each have a PRT which checks (1) is the answer a root, and (2) is the root in the correct form. Note the use of CasEqual in the PRTs which establish the student's answer is really the correct form, using `complex_exponentialp(ex)`. Complex exponential forms are prone to being automatically simplified by Maxima back into Cartesian form!
-
+ <text><![CDATA[This question has two interesting aspects.
+
+1. It deals with complex numbers in polar form.
+2. The answer is an example of "unsorted multi-input answers". That is, we end up with a set of solutions at the end, and we want to decide that all are solutions, and all solutions are given!
+
+To deal with this, the last three inputs each have a PRT which checks (1) is the answer a root, and (2) is the root in the correct form. Note the use of CasEqual in the PRTs which establish the student's answer is really the correct form, using `complex_exponentialp(ex)`. Complex exponential forms are prone to being automatically simplified by Maxima back into Cartesian form!
+
We then have one PRT which checks the _set_ of answers is correct.]]></text>
</questiondescription>
<questionsimplify>0</questionsimplify>
@@ -175,7 +174,7 @@ We then have one PRT which checks the _set_ of answers is correct.]]></text>
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>SAns1</name>
<type>numerical</type>
@@ -183,16 +182,16 @@ We then have one PRT which checks the _set_ of answers is correct.]]></text>
<boxsize>4</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>SAns2</name>
@@ -201,16 +200,16 @@ We then have one PRT which checks the _set_ of answers is correct.]]></text>
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>1</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>SAns3</name>
@@ -219,16 +218,16 @@ We then have one PRT which checks the _set_ of answers is correct.]]></text>
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>SAns4</name>
@@ -237,16 +236,16 @@ We then have one PRT which checks the _set_ of answers is correct.]]></text>
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>SAns5</name>
@@ -255,16 +254,16 @@ We then have one PRT which checks the _set_ of answers is correct.]]></text>
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<prt>
<name>prt1</name>
@@ -272,19 +271,19 @@ We then have one PRT which checks the _set_ of answers is correct.]]></text>
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>SAns1</sans>
<tans>Tans1</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>0.5</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>1</truenextnode>
<trueanswernote>prt2-1-T</trueanswernote>
<truefeedback format="html">
@@ -292,25 +291,25 @@ We then have one PRT which checks the _set_ of answers is correct.]]></text>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>1</falsenextnode>
<falseanswernote>prt2-1-F</falseanswernote>
<falsefeedback format="html">
- <text><![CDATA[<p>The radius \(r\) is unfortunately wrong.</p>
+ <text><![CDATA[<p>The radius \(r\) is unfortunately wrong.</p>
<p>If \(z = {@zPar@}\), then what must the distance to the origin be? That distance is the same as the radius! (As usual, use the Pythagorean theorem to calculate the distance.)</p>]]></text>
</falsefeedback>
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>SAns2</sans>
<tans>Tans2</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>+</truescoremode>
<truescore>0.5</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-2-T</trueanswernote>
<truefeedback format="html">
@@ -318,11 +317,11 @@ We then have one PRT which checks the _set_ of answers is correct.]]></text>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-2-F</falseanswernote>
<falsefeedback format="html">
- <text><![CDATA[<p>The argument \(\theta\) is unfortunately wrong.</p>
+ <text><![CDATA[<p>The argument \(\theta\) is unfortunately wrong.</p>
<p>Use the figure! You know that the real part of \(z\) is \(0\), so what must the angle be? Remember the requirement \(-\pi < \theta \leq \pi\).</p>]]></text>
</falsefeedback>
</node>
@@ -333,10 +332,10 @@ We then have one PRT which checks the _set_ of answers is correct.]]></text>
<autosimplify>0</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text>SAnss: {polarform_simp(SAns3), polarform_simp(SAns4), polarform_simp(SAns5)};
-TAnss: {polarform_simp(Tans3), polarform_simp(Tans4), polarform_simp(Tans5)};
-
-/* Make sure all answers are solutions. */
+ <text>SAnss: {polarform_simp(SAns3), polarform_simp(SAns4), polarform_simp(SAns5)};
+TAnss: {polarform_simp(Tans3), polarform_simp(Tans4), polarform_simp(Tans5)};
+
+/* Make sure all answers are solutions. */
SAnssc:map(lambda([ex],ev(ratsimp(ex^3),simp)),SAnss);</text>
</feedbackvariables>
<node>
@@ -345,23 +344,23 @@ SAnssc:map(lambda([ex],ev(ratsimp(ex^3),simp)),SAnss);</text>
<answertest>AlgEquiv</answertest>
<sans>SAnssc</sans>
<tans>{z}</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>+</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>1</truenextnode>
<trueanswernote>prt2-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt2-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
@@ -370,19 +369,19 @@ SAnssc:map(lambda([ex],ev(ratsimp(ex^3),simp)),SAnss);</text>
<answertest>Sets</answertest>
<sans>SAnss</sans>
<tans>TAnss</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt3-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt3-1-F</falseanswernote>
<falsefeedback format="html">
@@ -396,7 +395,7 @@ SAnssc:map(lambda([ex],ev(ratsimp(ex^3),simp)),SAnss);</text>
<autosimplify>0</autosimplify>
<feedbackstyle>2</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
@@ -404,19 +403,19 @@ SAnssc:map(lambda([ex],ev(ratsimp(ex^3),simp)),SAnss);</text>
<answertest>AlgEquiv</answertest>
<sans>SAns3^3</sans>
<tans>z</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>1</truenextnode>
<trueanswernote>prt3-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>1</falsenextnode>
<falseanswernote>prt3-1-F</falseanswernote>
<falsefeedback format="html">
@@ -429,19 +428,19 @@ SAnssc:map(lambda([ex],ev(ratsimp(ex^3),simp)),SAnss);</text>
<answertest>CasEqual</answertest>
<sans>complex_exponentialp(SAns3)</sans>
<tans>true</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>+</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt3-2-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt3-2-F</falseanswernote>
<falsefeedback format="html">
@@ -455,7 +454,7 @@ SAnssc:map(lambda([ex],ev(ratsimp(ex^3),simp)),SAnss);</text>
<autosimplify>1</autosimplify>
<feedbackstyle>2</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
@@ -463,19 +462,19 @@ SAnssc:map(lambda([ex],ev(ratsimp(ex^3),simp)),SAnss);</text>
<answertest>AlgEquiv</answertest>
<sans>SAns4^3</sans>
<tans>z</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>1</truenextnode>
<trueanswernote>prt4-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>1</falsenextnode>
<falseanswernote>prt4-1-F</falseanswernote>
<falsefeedback format="html">
@@ -488,19 +487,19 @@ SAnssc:map(lambda([ex],ev(ratsimp(ex^3),simp)),SAnss);</text>
<answertest>CasEqual</answertest>
<sans>complex_exponentialp(SAns4)</sans>
<tans>true</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>+</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt4-2-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt4-2-F</falseanswernote>
<falsefeedback format="html">
@@ -514,7 +513,7 @@ SAnssc:map(lambda([ex],ev(ratsimp(ex^3),simp)),SAnss);</text>
<autosimplify>0</autosimplify>
<feedbackstyle>2</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
@@ -522,19 +521,19 @@ SAnssc:map(lambda([ex],ev(ratsimp(ex^3),simp)),SAnss);</text>
<answertest>AlgEquiv</answertest>
<sans>SAns5^3</sans>
<tans>z</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>1</truenextnode>
<trueanswernote>prt5-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>1</falsenextnode>
<falseanswernote>prt5-1-F</falseanswernote>
<falsefeedback format="html">
@@ -547,19 +546,19 @@ SAnssc:map(lambda([ex],ev(ratsimp(ex^3),simp)),SAnss);</text>
<answertest>CasEqual</answertest>
<sans>complex_exponentialp(SAns5)</sans>
<tans>true</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>+</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt5-2-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt5-2-F</falseanswernote>
<falsefeedback format="html">
@@ -576,7 +575,7 @@ SAnssc:map(lambda([ex],ev(ratsimp(ex^3),simp)),SAnss);</text>
<deployedseed>1940161873</deployedseed>
<qtest>
<testcase>1</testcase>
- <description></description>
+ <description/>
<testinput>
<name>SAns1</name>
<value>Tans1</value>
@@ -630,7 +629,7 @@ SAnssc:map(lambda([ex],ev(ratsimp(ex^3),simp)),SAnss);</text>
</qtest>
<qtest>
<testcase>2</testcase>
- <description></description>
+ <description/>
<testinput>
<name>SAns1</name>
<value>Twrong1</value>
@@ -684,7 +683,7 @@ SAnssc:map(lambda([ex],ev(ratsimp(ex^3),simp)),SAnss);</text>
</qtest>
<qtest>
<testcase>3</testcase>
- <description></description>
+ <description/>
<testinput>
<name>SAns1</name>
<value>Tans1</value>
@@ -738,7 +737,7 @@ SAnssc:map(lambda([ex],ev(ratsimp(ex^3),simp)),SAnss);</text>
</qtest>
<qtest>
<testcase>4</testcase>
- <description></description>
+ <description/>
<testinput>
<name>SAns1</name>
<value>Tans1</value>
@@ -768,7 +767,7 @@ SAnssc:map(lambda([ex],ev(ratsimp(ex^3),simp)),SAnss);</text>
<expected>
<name>prt2</name>
<expectedscore>0.0000000</expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedpenalty/>
<expectedanswernote>prt3-1-F</expectedanswernote>
</expected>
<expected>
@@ -792,7 +791,7 @@ SAnssc:map(lambda([ex],ev(ratsimp(ex^3),simp)),SAnss);</text>
</qtest>
<qtest>
<testcase>5</testcase>
- <description></description>
+ <description/>
<testinput>
<name>SAns1</name>
<value>Tans1</value>
@@ -881,5 +880,4 @@ SAnssc:map(lambda([ex],ev(ratsimp(ex^3),simp)),SAnss);</text>
</tag>
</tags>
</question>
-
-</quiz>
\ No newline at end of file
+</quiz>
diff --git a/samplequestions/stacklibrary/Topics/JSXGraphs-Discrete_mathematics_graph-theory-2.xml b/samplequestions/stacklibrary/Topics/JSXGraphs-Discrete_mathematics_graph-theory-2.xml
index 5fc2935275a2e343b34fec3c7d4b5fbb83c04f9d..f24e1b1a01418488256b587a738e3e207bfb6fd3 100644
--- a/samplequestions/stacklibrary/Topics/JSXGraphs-Discrete_mathematics_graph-theory-2.xml
+++ b/samplequestions/stacklibrary/Topics/JSXGraphs-Discrete_mathematics_graph-theory-2.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 12700 -->
<question type="stack">
<name>
<text><![CDATA[Discrete mathematics & graph theory - 2 - JSXGraphs]]></text>
@@ -43,7 +42,7 @@
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2024092500</text>
</stackversion>
@@ -61,10 +60,10 @@ ta1:2;</text>
<text>[[feedback:prt1]]</text>
</specificfeedback>
<questionnote format="html">
- <text></text>
+ <text/>
</questionnote>
<questiondescription format="html">
- <text></text>
+ <text/>
</questiondescription>
<questionsimplify>1</questionsimplify>
<assumepositive>0</assumepositive>
@@ -86,7 +85,7 @@ ta1:2;</text>
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans1</name>
<type>algebraic</type>
@@ -94,16 +93,16 @@ ta1:2;</text>
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>1</showvalidation>
- <options></options>
+ <options/>
</input>
<prt>
<name>prt1</name>
@@ -111,27 +110,27 @@ ta1:2;</text>
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans1</sans>
<tans>ta1</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
@@ -155,7 +154,7 @@ ta1:2;</text>
</qtest>
<qtest>
<testcase>2</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>3</value>
@@ -168,5 +167,4 @@ ta1:2;</text>
</expected>
</qtest>
</question>
-
-</quiz>
\ No newline at end of file
+</quiz>
diff --git a/samplequestions/stacklibrary/Topics/LinearAlgebra/Cross-product-non-cancellation.xml b/samplequestions/stacklibrary/Topics/LinearAlgebra/Cross-product-non-cancellation.xml
index a24f786db3277327505f4c1d9af2d5843dedabf1..d1526268268556b01e2914fa079f79d8bf4fcc7d 100644
--- a/samplequestions/stacklibrary/Topics/LinearAlgebra/Cross-product-non-cancellation.xml
+++ b/samplequestions/stacklibrary/Topics/LinearAlgebra/Cross-product-non-cancellation.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 12811 -->
<question type="stack">
<name>
<text>Cross-product-non-cancellation.</text>
@@ -18,7 +17,7 @@
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2024092500</text>
</stackversion>
@@ -62,7 +61,7 @@ incorr1:mcq_incorrect(ta1);]]></text>
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans1</name>
<type>checkbox</type>
@@ -70,16 +69,16 @@ incorr1:mcq_incorrect(ta1);]]></text>
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>1</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<prt>
<name>prt1</name>
@@ -87,15 +86,15 @@ incorr1:mcq_incorrect(ta1);]]></text>
<autosimplify>0</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>setify(ans1)</sans>
<tans>setify(corr1)</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
@@ -103,7 +102,7 @@ incorr1:mcq_incorrect(ta1);]]></text>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-0-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
@@ -111,20 +110,20 @@ incorr1:mcq_incorrect(ta1);]]></text>
<falsenextnode>1</falsenextnode>
<falseanswernote>prt1-0-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>subsetp(setify(ans1),setify(corr1))</sans>
<tans>true</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>+</truescoremode>
<truescore>0.5</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-2-T</trueanswernote>
<truefeedback format="html">
@@ -132,32 +131,32 @@ incorr1:mcq_incorrect(ta1);]]></text>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>2</falsenextnode>
<falseanswernote>prt1-2-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>2</name>
- <description></description>
+ <description/>
<answertest>CasEqual</answertest>
<sans>cardinality(ev(intersection(setify(incorr1),setify(ans1)),simp))</sans>
<tans>0</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>+</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-3-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-3-F</falseanswernote>
<falsefeedback format="html">
@@ -177,7 +176,7 @@ incorr1:mcq_incorrect(ta1);]]></text>
<deployedseed>1201499788</deployedseed>
<qtest>
<testcase>1</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>[incorr1[1]]</value>
@@ -191,7 +190,7 @@ incorr1:mcq_incorrect(ta1);]]></text>
</qtest>
<qtest>
<testcase>2</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>corr1</value>
@@ -205,7 +204,7 @@ incorr1:mcq_incorrect(ta1);]]></text>
</qtest>
<qtest>
<testcase>3</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>[corr1[1],incorr1[1]]</value>
@@ -219,7 +218,7 @@ incorr1:mcq_incorrect(ta1);]]></text>
</qtest>
<qtest>
<testcase>4</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>[corr1[1]]</value>
@@ -227,7 +226,7 @@ incorr1:mcq_incorrect(ta1);]]></text>
<expected>
<name>prt1</name>
<expectedscore>0.5000000</expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedpenalty/>
<expectedanswernote>prt1-2-T</expectedanswernote>
</expected>
</qtest>
@@ -236,5 +235,4 @@ incorr1:mcq_incorrect(ta1);]]></text>
</tag>
</tags>
</question>
-
</quiz>
diff --git a/samplequestions/stacklibrary/Topics/LinearAlgebra/Diagonalizable-proof-comprehension.xml b/samplequestions/stacklibrary/Topics/LinearAlgebra/Diagonalizable-proof-comprehension.xml
index a7f5cb4a67ad05d8155dddd531670482e27c0fe0..992c30ebb4505b271534430f1119eb2ed3199327 100644
--- a/samplequestions/stacklibrary/Topics/LinearAlgebra/Diagonalizable-proof-comprehension.xml
+++ b/samplequestions/stacklibrary/Topics/LinearAlgebra/Diagonalizable-proof-comprehension.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 112258 -->
<question type="stack">
<name>
<text>Diagonalizable proof comprehension</text>
@@ -53,7 +52,7 @@ This proof is not correct because [[input:an2]] [[validation:an2]]
<defaultgrade>10</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2023010400</text>
</stackversion>
@@ -86,9 +85,7 @@ tb1:false;
tballow2:["the converse is missing","missing converse", "half the proof is missing", "the reverse direction is missing", "you must prove the converse as well", "only proved one way", "the converse has not been proved","it doesn't prove the double implication","they have only proved it in one direction","show the converse","The proof should be and if and only if proof","there is no converse in the proof", "there is no converse", "it only proves one direction of the if and only if statement", "did not proof the converse of the theorem"];
tballow2:append(tballow2, ["didn't prove that A having n linearly independent eigenvectors means that A is diagonalizable"]);
tbforbid2:["the converse is not true"];
-tb3:true;
-
-]]></text>
+tb3:true;]]></text>
</questionvariables>
<specificfeedback format="html">
<text><![CDATA[<ul>
@@ -100,7 +97,7 @@ tb3:true;
</ul>]]></text>
</specificfeedback>
<questionnote format="moodle_auto_format">
- <text></text>
+ <text/>
</questionnote>
<questiondescription format="moodle_auto_format">
<text>This question is distributed as part of the STACK source code as an example. This is licenced as Creative Commons Attribution-ShareAlike 4.0 International License.</text>
@@ -125,7 +122,7 @@ tb3:true;
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>an1</name>
<type>boolean</type>
@@ -133,16 +130,16 @@ tb3:true;
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>an2</name>
@@ -151,10 +148,10 @@ tb3:true;
<boxsize>50</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
@@ -169,16 +166,16 @@ tb3:true;
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans1</name>
@@ -187,16 +184,16 @@ tb3:true;
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>5</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans2</name>
@@ -205,16 +202,16 @@ tb3:true;
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>5</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans3</name>
@@ -223,9 +220,9 @@ tb3:true;
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>4</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
+ <forbidwords/>
<allowwords>lambdak</allowwords>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
@@ -241,16 +238,16 @@ tb3:true;
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>answ2</name>
@@ -259,16 +256,16 @@ tb3:true;
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>answ3</name>
@@ -277,16 +274,16 @@ tb3:true;
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>answ4</name>
@@ -295,16 +292,16 @@ tb3:true;
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<prt>
<name>prt1</name>
@@ -312,44 +309,44 @@ tb3:true;
<autosimplify>0</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>CasEqual</answertest>
<sans>ans1</sans>
<tans>ta1</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>0.5</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>2</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>1</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>CasEqual</answertest>
<sans>ans1</sans>
<tans>P*A*P^(-1)</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>0.25</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>2</truenextnode>
<trueanswernote>prt1-2-T</trueanswernote>
<truefeedback format="html">
@@ -357,49 +354,49 @@ tb3:true;
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>2</falsenextnode>
<falseanswernote>prt1-2-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>2</name>
- <description></description>
+ <description/>
<answertest>CasEqual</answertest>
<sans>ans2</sans>
<tans>ta2</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>+</truescoremode>
<truescore>0.5</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-3-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>3</falsenextnode>
<falseanswernote>prt1-3-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>3</name>
- <description></description>
+ <description/>
<answertest>CasEqual</answertest>
<sans>ans2</sans>
<tans>D*P</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>+</truescoremode>
<truescore>0.25</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-4-T</trueanswernote>
<truefeedback format="html">
@@ -407,11 +404,11 @@ tb3:true;
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-4-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -421,32 +418,31 @@ tb3:true;
<autosimplify>1</autosimplify>
<feedbackstyle>3</feedbackstyle>
<feedbackvariables>
- <text>sa3:at(ans3,[p_k=pk,lambda_k=lambdak]);
-</text>
+ <text>sa3:at(ans3,[p_k=pk,lambda_k=lambdak]);</text>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>sa3</sans>
<tans>ta3</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt2-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt2-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -461,23 +457,23 @@ sa2:[wsa1,wsa2,wsa3,wsa4];</text>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>sa1</sans>
<tans>sa2</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt3-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt3-1-F</falseanswernote>
<falsefeedback format="html">
@@ -492,27 +488,27 @@ sa2:[wsa1,wsa2,wsa3,wsa4];</text>
<autosimplify>1</autosimplify>
<feedbackstyle>2</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>an1</sans>
<tans>tb1</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>0.33</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>1</truenextnode>
<trueanswernote>prt4-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt4-1-F</falseanswernote>
<falsefeedback format="html">
@@ -521,32 +517,32 @@ sa2:[wsa1,wsa2,wsa3,wsa4];</text>
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>StringSloppy</answertest>
<sans>an2</sans>
<tans><![CDATA[""]]></tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt4-2-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>+</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>2</falsenextnode>
<falseanswernote>prt4-2-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>2</name>
- <description></description>
+ <description/>
<answertest>Levenshtein</answertest>
<sans>an2</sans>
<tans>[tballow2,tbforbid2]</tans>
@@ -554,19 +550,19 @@ sa2:[wsa1,wsa2,wsa3,wsa4];</text>
<quiet>0</quiet>
<truescoremode>+</truescoremode>
<truescore>0.67</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt4-3-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt4-3-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -576,37 +572,37 @@ sa2:[wsa1,wsa2,wsa3,wsa4];</text>
<autosimplify>1</autosimplify>
<feedbackstyle>2</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>an3</sans>
<tans>tb3</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt5-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt5-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
<qtest>
<testcase>1</testcase>
- <description></description>
+ <description/>
<testinput>
<name>an1</name>
<value>tb1</value>
@@ -680,7 +676,7 @@ sa2:[wsa1,wsa2,wsa3,wsa4];</text>
</qtest>
<qtest>
<testcase>2</testcase>
- <description></description>
+ <description/>
<testinput>
<name>an1</name>
<value>false</value>
@@ -707,19 +703,19 @@ sa2:[wsa1,wsa2,wsa3,wsa4];</text>
</testinput>
<testinput>
<name>answ1</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>answ2</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>answ3</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>answ4</name>
- <value></value>
+ <value/>
</testinput>
<expected>
<name>prt1</name>
@@ -735,8 +731,8 @@ sa2:[wsa1,wsa2,wsa3,wsa4];</text>
</expected>
<expected>
<name>prt3</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
<expected>
@@ -753,5 +749,4 @@ sa2:[wsa1,wsa2,wsa3,wsa4];</text>
</expected>
</qtest>
</question>
-
</quiz>
diff --git a/samplequestions/stacklibrary/Topics/LinearAlgebra/Eigenvalues-eigenvectors-give-examples.xml b/samplequestions/stacklibrary/Topics/LinearAlgebra/Eigenvalues-eigenvectors-give-examples.xml
index 0f5733f266294a67b80d95db2eaecb561a1ea94a..0a19ad10dc67c64877237ffba21dbb1d2c2a3e93 100644
--- a/samplequestions/stacklibrary/Topics/LinearAlgebra/Eigenvalues-eigenvectors-give-examples.xml
+++ b/samplequestions/stacklibrary/Topics/LinearAlgebra/Eigenvalues-eigenvectors-give-examples.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 112220 -->
<question type="stack">
<name>
<text>Eigenvalues and eigenvectors - give examples</text>
@@ -64,7 +63,7 @@ In this question, we have eigenvalues \(\lambda_1 = 1\) and \(\lambda_2 = {@a2@}
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2022082900</text>
</stackversion>
@@ -110,10 +109,10 @@ D:D1 . P1;
testa6:D;</text>
</questionvariables>
<specificfeedback format="html">
- <text></text>
+ <text/>
</specificfeedback>
<questionnote format="moodle_auto_format">
- <text> \(\lambda_1 = 1\) (fixed), \(\lambda_2 = {@a2@}\): {@ta6@}</text>
+ <text>\(\lambda_1 = 1\) (fixed), \(\lambda_2 = {@a2@}\): {@ta6@}</text>
</questionnote>
<questiondescription format="moodle_auto_format">
<text>This question is distributed as part of the STACK source code as an example. This is licenced as Creative Commons Attribution-ShareAlike 4.0 International License.</text>
@@ -138,7 +137,7 @@ testa6:D;</text>
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans1</name>
<type>algebraic</type>
@@ -146,16 +145,16 @@ testa6:D;</text>
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans2</name>
@@ -164,16 +163,16 @@ testa6:D;</text>
<boxsize>2</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans3</name>
@@ -182,16 +181,16 @@ testa6:D;</text>
<boxsize>2</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans4</name>
@@ -200,16 +199,16 @@ testa6:D;</text>
<boxsize>2</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans5</name>
@@ -218,16 +217,16 @@ testa6:D;</text>
<boxsize>2</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans6</name>
@@ -236,16 +235,16 @@ testa6:D;</text>
<boxsize>2</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans7</name>
@@ -254,16 +253,16 @@ testa6:D;</text>
<boxsize>70</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>2</showvalidation>
- <options></options>
+ <options/>
</input>
<prt>
<name>prt1</name>
@@ -271,56 +270,56 @@ testa6:D;</text>
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans1</sans>
<tans>ta1</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>1</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>SubstEquiv</answertest>
<sans>ans1</sans>
<tans>ta1</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>0.5</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-2-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-2-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -337,7 +336,7 @@ node1:is(sa2evrank=ta2evrank)</text>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>node1</sans>
<tans>true</tans>
@@ -345,15 +344,15 @@ node1:is(sa2evrank=ta2evrank)</text>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt2-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt2-1-F</falseanswernote>
<falsefeedback format="html">
@@ -367,19 +366,19 @@ node1:is(sa2evrank=ta2evrank)</text>
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans2</sans>
<tans>matrix([0],[0])</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt3-1-T</trueanswernote>
<truefeedback format="html">
@@ -387,32 +386,32 @@ node1:is(sa2evrank=ta2evrank)</text>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>1</falsenextnode>
<falseanswernote>prt3-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans2.ans3</sans>
<tans>a1*ans3</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt3-2-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt3-2-F</falseanswernote>
<falsefeedback format="html">
@@ -427,11 +426,11 @@ node1:is(sa2evrank=ta2evrank)</text>
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans4</sans>
<tans>matrix([0],[0])</tans>
@@ -439,7 +438,7 @@ node1:is(sa2evrank=ta2evrank)</text>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt4-1-T</trueanswernote>
<truefeedback format="html">
@@ -447,32 +446,32 @@ node1:is(sa2evrank=ta2evrank)</text>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>1</falsenextnode>
<falseanswernote>prt4-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans2.ans4</sans>
<tans>a2*ans4</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt4-2-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt4-2-F</falseanswernote>
<falsefeedback format="html">
@@ -487,27 +486,27 @@ node1:is(sa2evrank=ta2evrank)</text>
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans5</sans>
<tans>ta5</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt5-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt5-1-F</falseanswernote>
<falsefeedback format="html">
@@ -540,19 +539,19 @@ node1:is(sa6evrank=[a2,a1]);</text>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>sa6evrank</sans>
<tans>[a2,a1]</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt6-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
@@ -565,7 +564,7 @@ node1:is(sa6evrank=[a2,a1]);</text>
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>node2</sans>
<tans>true</tans>
@@ -573,11 +572,11 @@ node1:is(sa6evrank=[a2,a1]);</text>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>5</truenextnode>
<trueanswernote>prt6-2-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
@@ -590,19 +589,19 @@ node1:is(sa6evrank=[a2,a1]);</text>
</node>
<node>
<name>2</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>determinant(ans6)</sans>
<tans>determinant(ans2)</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>+</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>3</truenextnode>
<trueanswernote>prt6-3-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
@@ -615,7 +614,7 @@ node1:is(sa6evrank=[a2,a1]);</text>
</node>
<node>
<name>3</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>node4</sans>
<tans>true</tans>
@@ -623,11 +622,11 @@ node1:is(sa6evrank=[a2,a1]);</text>
<quiet>0</quiet>
<truescoremode>+</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>4</truenextnode>
<trueanswernote>prt6-4-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
@@ -640,19 +639,19 @@ node1:is(sa6evrank=[a2,a1]);</text>
</node>
<node>
<name>4</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>sa2tr</sans>
<tans>sa6tr</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>+</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>0</truenextnode>
<trueanswernote>prt6-5-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
@@ -665,7 +664,7 @@ node1:is(sa6evrank=[a2,a1]);</text>
</node>
<node>
<name>5</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>node6</sans>
<tans>true</tans>
@@ -673,15 +672,15 @@ node1:is(sa6evrank=[a2,a1]);</text>
<quiet>0</quiet>
<truescoremode>+</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>2</truenextnode>
<trueanswernote>prt6-6-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt6-6-F</falseanswernote>
<falsefeedback format="html">
@@ -694,7 +693,7 @@ node1:is(sa6evrank=[a2,a1]);</text>
<deployedseed>873158876</deployedseed>
<qtest>
<testcase>1</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>ta1</value>
@@ -758,7 +757,7 @@ node1:is(sa6evrank=[a2,a1]);</text>
</qtest>
<qtest>
<testcase>2</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>testa1</value>
@@ -822,7 +821,7 @@ node1:is(sa6evrank=[a2,a1]);</text>
</qtest>
<qtest>
<testcase>3</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>(x-10)*(x-2)</value>
@@ -849,7 +848,7 @@ node1:is(sa6evrank=[a2,a1]);</text>
</testinput>
<testinput>
<name>ans7</name>
- <value></value>
+ <value/>
</testinput>
<expected>
<name>prt1</name>
@@ -890,7 +889,7 @@ node1:is(sa6evrank=[a2,a1]);</text>
</qtest>
<qtest>
<testcase>4</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>testa1</value>
@@ -954,34 +953,34 @@ node1:is(sa6evrank=[a2,a1]);</text>
</qtest>
<qtest>
<testcase>5</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>ev(ta1,x=lambda)</value>
</testinput>
<testinput>
<name>ans2</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ans3</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ans4</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ans5</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ans6</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ans7</name>
- <value></value>
+ <value/>
</testinput>
<expected>
<name>prt1</name>
@@ -991,35 +990,34 @@ node1:is(sa6evrank=[a2,a1]);</text>
</expected>
<expected>
<name>prt2</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
<expected>
<name>prt3</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
<expected>
<name>prt4</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
<expected>
<name>prt5</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
<expected>
<name>prt6</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
</qtest>
</question>
-
</quiz>
diff --git a/samplequestions/stacklibrary/Topics/LinearAlgebra/Eigenvalues-vectors-3-3.xml b/samplequestions/stacklibrary/Topics/LinearAlgebra/Eigenvalues-vectors-3-3.xml
index 52b2598d1cd073a4601fc0fd2dfc1ee93cbb70c1..4e956cb2088cc0ebeb2ddc46b7abb599029b1bd2 100755
--- a/samplequestions/stacklibrary/Topics/LinearAlgebra/Eigenvalues-vectors-3-3.xml
+++ b/samplequestions/stacklibrary/Topics/LinearAlgebra/Eigenvalues-vectors-3-3.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 112269 -->
<question type="stack">
<name>
<text>Eigenvalues and vectors of 3*3 matrices.</text>
@@ -25,7 +24,7 @@ This gives
<defaultgrade>6</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2023010400</text>
</stackversion>
@@ -76,7 +75,7 @@ cp:expand(determinant(LI-M));</text>
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>l1</name>
<type>algebraic</type>
@@ -84,16 +83,16 @@ cp:expand(determinant(LI-M));</text>
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>1</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>1</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>l2</name>
@@ -102,16 +101,16 @@ cp:expand(determinant(LI-M));</text>
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>1</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>1</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>l3</name>
@@ -120,16 +119,16 @@ cp:expand(determinant(LI-M));</text>
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>1</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>sev1</name>
@@ -138,16 +137,16 @@ cp:expand(determinant(LI-M));</text>
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>1</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>1</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>sev2</name>
@@ -156,16 +155,16 @@ cp:expand(determinant(LI-M));</text>
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>1</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>1</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>sev3</name>
@@ -174,16 +173,16 @@ cp:expand(determinant(LI-M));</text>
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>1</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>1</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<prt>
<name>ev1</name>
@@ -191,27 +190,27 @@ cp:expand(determinant(LI-M));</text>
<autosimplify>1</autosimplify>
<feedbackstyle>2</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>M.sev1</sans>
<tans>l1*sev1</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>1</truenextnode>
<trueanswernote>ev1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>ev1-1-F</falseanswernote>
<falsefeedback format="html">
@@ -220,15 +219,15 @@ cp:expand(determinant(LI-M));</text>
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>sev1</sans>
<tans>matrix([0],[0],[0])</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>ev1-2-T</trueanswernote>
<truefeedback format="html">
@@ -236,11 +235,11 @@ cp:expand(determinant(LI-M));</text>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>ev1-2-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -250,27 +249,27 @@ cp:expand(determinant(LI-M));</text>
<autosimplify>1</autosimplify>
<feedbackstyle>2</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>M.sev2</sans>
<tans>l2*sev2</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>1</truenextnode>
<trueanswernote>ev2-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>ev2-1-F</falseanswernote>
<falsefeedback format="html">
@@ -279,15 +278,15 @@ cp:expand(determinant(LI-M));</text>
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>sev2</sans>
<tans>matrix([0],[0],[0])</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>ev2-2-T</trueanswernote>
<truefeedback format="html">
@@ -295,11 +294,11 @@ cp:expand(determinant(LI-M));</text>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>ev2-2-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -309,27 +308,27 @@ cp:expand(determinant(LI-M));</text>
<autosimplify>1</autosimplify>
<feedbackstyle>2</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>M.sev3</sans>
<tans>l3*sev3</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>1</truenextnode>
<trueanswernote>ev3-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>ev3-1-F</falseanswernote>
<falsefeedback format="html">
@@ -338,15 +337,15 @@ cp:expand(determinant(LI-M));</text>
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>sev3</sans>
<tans>matrix([0],[0],[0])</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>ev3-2-T</trueanswernote>
<truefeedback format="html">
@@ -354,11 +353,11 @@ cp:expand(determinant(LI-M));</text>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>ev3-2-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -368,27 +367,27 @@ cp:expand(determinant(LI-M));</text>
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>{l1,l2,l3}</sans>
<tans>{e1,e2,e3}</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>0.75</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>4</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>4</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
@@ -397,23 +396,23 @@ cp:expand(determinant(LI-M));</text>
</node>
<node>
<name>4</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>length({l1,l2,l3})</sans>
<tans>3</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>+</truescoremode>
<truescore>0.25</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-5-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-5-F</falseanswernote>
<falsefeedback format="html">
@@ -430,7 +429,7 @@ cp:expand(determinant(LI-M));</text>
<deployedseed>1510782468</deployedseed>
<qtest>
<testcase>1</testcase>
- <description></description>
+ <description/>
<testinput>
<name>l1</name>
<value>e1</value>
@@ -482,7 +481,7 @@ cp:expand(determinant(LI-M));</text>
</qtest>
<qtest>
<testcase>2</testcase>
- <description></description>
+ <description/>
<testinput>
<name>l1</name>
<value>e1</value>
@@ -534,7 +533,7 @@ cp:expand(determinant(LI-M));</text>
</qtest>
<qtest>
<testcase>3</testcase>
- <description></description>
+ <description/>
<testinput>
<name>l1</name>
<value>e3</value>
@@ -585,5 +584,4 @@ cp:expand(determinant(LI-M));</text>
</expected>
</qtest>
</question>
-
</quiz>
diff --git a/samplequestions/stacklibrary/Topics/LinearAlgebra/Eigenvalues-vectors-4-4.xml b/samplequestions/stacklibrary/Topics/LinearAlgebra/Eigenvalues-vectors-4-4.xml
index 78edc28b2ed336db76947ee85f8485d7bc932bd2..ff0d865941b305901b9e54a0b15307587b8d1253 100755
--- a/samplequestions/stacklibrary/Topics/LinearAlgebra/Eigenvalues-vectors-4-4.xml
+++ b/samplequestions/stacklibrary/Topics/LinearAlgebra/Eigenvalues-vectors-4-4.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 112437 -->
<question type="stack">
<name>
<text>Eigenvalues and vectors of of structured 4*4 matrices.</text>
@@ -33,7 +32,7 @@ This gives
<defaultgrade>2</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2023121100</text>
</stackversion>
@@ -57,8 +56,7 @@ cp:expand(determinant(LI-M));
S1:submatrix(3,4,M,3,4);
cp1:matrix([lambda,0],[0,lambda])-S1;
cp2:expand(determinant(cp1));
-cp3:factor(expand(cp/cp2));
-</text>
+cp3:factor(expand(cp/cp2));</text>
</questionvariables>
<specificfeedback format="html">
<text><![CDATA[Overall: [[feedback:prt1]]
@@ -71,7 +69,7 @@ cp3:factor(expand(cp/cp2));
<text>\( PDP^{-1} = {@P@}{@D@}{@PI@} = {@M@}.\)</text>
</questionnote>
<questiondescription format="moodle_auto_format">
- <text></text>
+ <text/>
</questiondescription>
<questionsimplify>1</questionsimplify>
<assumepositive>0</assumepositive>
@@ -93,7 +91,7 @@ cp3:factor(expand(cp/cp2));
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>l1</name>
<type>algebraic</type>
@@ -101,16 +99,16 @@ cp3:factor(expand(cp/cp2));
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>1</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>1</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>l2</name>
@@ -119,16 +117,16 @@ cp3:factor(expand(cp/cp2));
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>1</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>1</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>l3</name>
@@ -137,16 +135,16 @@ cp3:factor(expand(cp/cp2));
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>1</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>l4</name>
@@ -155,16 +153,16 @@ cp3:factor(expand(cp/cp2));
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>sev1</name>
@@ -173,16 +171,16 @@ cp3:factor(expand(cp/cp2));
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>1</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>1</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>sev2</name>
@@ -191,16 +189,16 @@ cp3:factor(expand(cp/cp2));
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>1</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>1</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>sev3</name>
@@ -209,16 +207,16 @@ cp3:factor(expand(cp/cp2));
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>1</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>1</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>sev4</name>
@@ -227,16 +225,16 @@ cp3:factor(expand(cp/cp2));
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<prt>
<name>ev1</name>
@@ -244,27 +242,27 @@ cp3:factor(expand(cp/cp2));
<autosimplify>1</autosimplify>
<feedbackstyle>2</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>M.sev1</sans>
<tans>l1*sev1</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>1</truenextnode>
<trueanswernote>ev1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>ev1-1-F</falseanswernote>
<falsefeedback format="html">
@@ -273,15 +271,15 @@ cp3:factor(expand(cp/cp2));
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>sev1</sans>
<tans>matrix([0],[0],[0],[0])</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>ev1-2-T</trueanswernote>
<truefeedback format="html">
@@ -289,11 +287,11 @@ cp3:factor(expand(cp/cp2));
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>ev1-2-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -303,27 +301,27 @@ cp3:factor(expand(cp/cp2));
<autosimplify>1</autosimplify>
<feedbackstyle>2</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>M.sev2</sans>
<tans>l2*sev2</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>1</truenextnode>
<trueanswernote>ev2-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>ev2-1-F</falseanswernote>
<falsefeedback format="html">
@@ -332,15 +330,15 @@ cp3:factor(expand(cp/cp2));
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>sev2</sans>
<tans>matrix([0],[0],[0],[0])</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>ev2-2-T</trueanswernote>
<truefeedback format="html">
@@ -348,11 +346,11 @@ cp3:factor(expand(cp/cp2));
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>ev2-2-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -362,27 +360,27 @@ cp3:factor(expand(cp/cp2));
<autosimplify>1</autosimplify>
<feedbackstyle>2</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>M.sev3</sans>
<tans>l3*sev3</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>1</truenextnode>
<trueanswernote>ev3-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>ev3-1-F</falseanswernote>
<falsefeedback format="html">
@@ -391,15 +389,15 @@ cp3:factor(expand(cp/cp2));
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>sev3</sans>
<tans>matrix([0],[0],[0],[0])</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>ev3-2-T</trueanswernote>
<truefeedback format="html">
@@ -407,11 +405,11 @@ cp3:factor(expand(cp/cp2));
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>ev3-2-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -421,27 +419,27 @@ cp3:factor(expand(cp/cp2));
<autosimplify>1</autosimplify>
<feedbackstyle>2</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>M.sev4</sans>
<tans>l4*sev4</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>1</truenextnode>
<trueanswernote>ev4-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>ev4-1-F</falseanswernote>
<falsefeedback format="html">
@@ -450,15 +448,15 @@ cp3:factor(expand(cp/cp2));
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>sev4</sans>
<tans>matrix([0],[0],[0],[0])</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>ev4-2-T</trueanswernote>
<truefeedback format="html">
@@ -466,11 +464,11 @@ cp3:factor(expand(cp/cp2));
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>ev4-2-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -480,27 +478,27 @@ cp3:factor(expand(cp/cp2));
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>{l1,l2,l3,l4}</sans>
<tans>{e1,e2,e3,e4}</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>0.75</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>4</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>4</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
@@ -509,23 +507,23 @@ cp3:factor(expand(cp/cp2));
</node>
<node>
<name>4</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>length({l1,l2,l3,l4})</sans>
<tans>4</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>+</truescoremode>
<truescore>0.25</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-5-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-5-F</falseanswernote>
<falsefeedback format="html">
@@ -542,7 +540,7 @@ cp3:factor(expand(cp/cp2));
<deployedseed>1510782468</deployedseed>
<qtest>
<testcase>1</testcase>
- <description></description>
+ <description/>
<testinput>
<name>l1</name>
<value>e1</value>
@@ -608,7 +606,7 @@ cp3:factor(expand(cp/cp2));
</qtest>
<qtest>
<testcase>2</testcase>
- <description></description>
+ <description/>
<testinput>
<name>l1</name>
<value>e1</value>
@@ -674,7 +672,7 @@ cp3:factor(expand(cp/cp2));
</qtest>
<qtest>
<testcase>3</testcase>
- <description></description>
+ <description/>
<testinput>
<name>l1</name>
<value>e3</value>
@@ -739,5 +737,4 @@ cp3:factor(expand(cp/cp2));
</expected>
</qtest>
</question>
-
</quiz>
diff --git a/samplequestions/stacklibrary/Topics/LinearAlgebra/Eigenvalues-vectors-PDPT.xml b/samplequestions/stacklibrary/Topics/LinearAlgebra/Eigenvalues-vectors-PDPT.xml
index a05e5f1a875143ed229f452a5505977978c7f371..77f6e064d90d44ed9f19a44a6f3d5c3dcdc2aef0 100755
--- a/samplequestions/stacklibrary/Topics/LinearAlgebra/Eigenvalues-vectors-PDPT.xml
+++ b/samplequestions/stacklibrary/Topics/LinearAlgebra/Eigenvalues-vectors-PDPT.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 112297 -->
<question type="stack">
<name>
<text>Find eigenvalues 3*3 +PDP^-1</text>
@@ -24,7 +23,7 @@
<defaultgrade>10</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2021120900</text>
</stackversion>
@@ -84,7 +83,7 @@ B: U_P.(D^2012).U_PT</text>
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans1</name>
<type>algebraic</type>
@@ -92,16 +91,16 @@ B: U_P.(D^2012).U_PT</text>
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>1</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans2</name>
@@ -110,16 +109,16 @@ B: U_P.(D^2012).U_PT</text>
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>1</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans3</name>
@@ -128,16 +127,16 @@ B: U_P.(D^2012).U_PT</text>
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>1</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans4</name>
@@ -146,16 +145,16 @@ B: U_P.(D^2012).U_PT</text>
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>1</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans5</name>
@@ -164,16 +163,16 @@ B: U_P.(D^2012).U_PT</text>
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>1</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans6</name>
@@ -182,16 +181,16 @@ B: U_P.(D^2012).U_PT</text>
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>1</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans7</name>
@@ -200,16 +199,16 @@ B: U_P.(D^2012).U_PT</text>
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>1</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans8</name>
@@ -218,16 +217,16 @@ B: U_P.(D^2012).U_PT</text>
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>1</showvalidation>
- <options></options>
+ <options/>
</input>
<prt>
<name>prt1</name>
@@ -235,27 +234,27 @@ B: U_P.(D^2012).U_PT</text>
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>A.ans2</sans>
<tans>ans1*ans2</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>0.3400000</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>1</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0.0000000</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>1</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
@@ -264,23 +263,23 @@ B: U_P.(D^2012).U_PT</text>
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>A.ans4</sans>
<tans>ans3*ans4</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>+</truescoremode>
<truescore>0.3300000</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>2</truenextnode>
<trueanswernote>prt1-2-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0.0000000</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>2</falsenextnode>
<falseanswernote>prt1-2-F</falseanswernote>
<falsefeedback format="html">
@@ -289,23 +288,23 @@ B: U_P.(D^2012).U_PT</text>
</node>
<node>
<name>2</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>A.ans6</sans>
<tans>ans5*ans6</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>+</truescoremode>
<truescore>0.3300000</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>3</truenextnode>
<trueanswernote>prt1-3-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0.0000000</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>3</falsenextnode>
<falseanswernote>prt1-3-F</falseanswernote>
<falsefeedback format="html">
@@ -314,23 +313,23 @@ B: U_P.(D^2012).U_PT</text>
</node>
<node>
<name>3</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>{ans1,ans3,ans5}</sans>
<tans>{lambda1,lambda2,lambda3}</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>+</truescoremode>
<truescore>0.0000000</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>4</truenextnode>
<trueanswernote>prt1-4-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0.5000000</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>4</falsenextnode>
<falseanswernote>prt1-4-F</falseanswernote>
<falsefeedback format="html">
@@ -339,15 +338,15 @@ B: U_P.(D^2012).U_PT</text>
</node>
<node>
<name>4</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>elementp(transpose(matrix([0,0,0])), {ans2,ans4,ans6})</sans>
<tans>true</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>-</truescoremode>
<truescore>0.4000000</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-5-T</trueanswernote>
<truefeedback format="html">
@@ -355,11 +354,11 @@ B: U_P.(D^2012).U_PT</text>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0.0000000</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-5-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -374,23 +373,23 @@ sde:{ans8[1,2],ans8[1,3],ans8[2,1],ans8[2,3],ans8[3,1],ans8[3,1]}</text>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>transpose(ans7).A.ans7</sans>
<tans>ans8</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>0.8000000</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>1</truenextnode>
<trueanswernote>prt2-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0.0000000</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>1</falsenextnode>
<falseanswernote>prt2-1-F</falseanswernote>
<falsefeedback format="html">
@@ -399,23 +398,23 @@ sde:{ans8[1,2],ans8[1,3],ans8[2,1],ans8[2,3],ans8[3,1],ans8[3,1]}</text>
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>sde</sans>
<tans>{0}</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>+</truescoremode>
<truescore>0.2000000</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt2-2-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0.0000000</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt2-2-F</falseanswernote>
<falsefeedback format="html">
@@ -425,7 +424,7 @@ sde:{ans8[1,2],ans8[1,3],ans8[2,1],ans8[2,3],ans8[3,1],ans8[3,1]}</text>
</prt>
<qtest>
<testcase>1</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>lambda1</value>
@@ -473,7 +472,7 @@ sde:{ans8[1,2],ans8[1,3],ans8[2,1],ans8[2,3],ans8[3,1],ans8[3,1]}</text>
</qtest>
<qtest>
<testcase>2</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>lambda2</value>
@@ -521,7 +520,7 @@ sde:{ans8[1,2],ans8[1,3],ans8[2,1],ans8[2,3],ans8[3,1],ans8[3,1]}</text>
</qtest>
<qtest>
<testcase>3</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>lambda1</value>
@@ -548,11 +547,11 @@ sde:{ans8[1,2],ans8[1,3],ans8[2,1],ans8[2,3],ans8[3,1],ans8[3,1]}</text>
</testinput>
<testinput>
<name>ans7</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ans8</name>
- <value></value>
+ <value/>
</testinput>
<expected>
<name>prt1</name>
@@ -562,11 +561,10 @@ sde:{ans8[1,2],ans8[1,3],ans8[2,1],ans8[2,3],ans8[3,1],ans8[3,1]}</text>
</expected>
<expected>
<name>prt2</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
</qtest>
</question>
-
</quiz>
diff --git a/samplequestions/stacklibrary/Topics/LinearAlgebra/Equation-plane-counter-example.xml b/samplequestions/stacklibrary/Topics/LinearAlgebra/Equation-plane-counter-example.xml
index 6f8c5a5460a6123f9ccd4c28df97443ad798d92e..159b28d1b6b7eea7ce6a432cf1ca5c7e56862059 100755
--- a/samplequestions/stacklibrary/Topics/LinearAlgebra/Equation-plane-counter-example.xml
+++ b/samplequestions/stacklibrary/Topics/LinearAlgebra/Equation-plane-counter-example.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 112262 -->
<question type="stack">
<name>
<text>Subspace and planes in R3</text>
@@ -26,7 +25,7 @@ Since the right hand side is \(0\) we immediately see that the zero vector belon
<defaultgrade>3</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2023010400</text>
</stackversion>
@@ -67,7 +66,7 @@ tac:transpose(tan).tap;</text>
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans1</name>
<type>boolean</type>
@@ -75,16 +74,16 @@ tac:transpose(tan).tap;</text>
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ansp</name>
@@ -93,10 +92,10 @@ tac:transpose(tan).tap;</text>
<boxsize>3</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
@@ -111,10 +110,10 @@ tac:transpose(tan).tap;</text>
<boxsize>3</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
@@ -129,10 +128,10 @@ tac:transpose(tan).tap;</text>
<boxsize>3</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
@@ -148,28 +147,27 @@ tac:transpose(tan).tap;</text>
<feedbackvariables>
<text>sanse:elementp(matrix([null],[null],[null]),{ansp,ansu,ansv});
sansn:crossproduct(ansu,ansv);
-sansc:transpose(sansn).ansp;
-</text>
+sansc:transpose(sansn).ansp;</text>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans1</sans>
<tans>ta1</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>+</truescoremode>
<truescore>0.33</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>4</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
@@ -178,15 +176,15 @@ sansc:transpose(sansn).ansp;
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>sansn</sans>
<tans>matrix([0],[0],[0])</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>-</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-2-T</trueanswernote>
<truefeedback format="html">
@@ -194,24 +192,24 @@ sansc:transpose(sansn).ansp;
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>2</falsenextnode>
<falseanswernote>prt1-2-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>2</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ansp</sans>
<tans>matrix([0],[0],[0])</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>+</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-3-T</trueanswernote>
<truefeedback format="html">
@@ -219,24 +217,24 @@ sansc:transpose(sansn).ansp;
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>3</falsenextnode>
<falseanswernote>prt1-3-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>3</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>sansc</sans>
<tans>0</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>+</truescoremode>
<truescore>0.67</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-4-T</trueanswernote>
<truefeedback format="html">
@@ -244,24 +242,24 @@ sansc:transpose(sansn).ansp;
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-4-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>4</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>sanse</sans>
<tans>true</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>+</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-5-T</trueanswernote>
<truefeedback format="html">
@@ -269,17 +267,17 @@ sansc:transpose(sansn).ansp;
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>1</falsenextnode>
<falseanswernote>prt1-5-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
<qtest>
<testcase>1</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>ta1</value>
@@ -305,22 +303,22 @@ sansc:transpose(sansn).ansp;
</qtest>
<qtest>
<testcase>2</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>true</value>
</testinput>
<testinput>
<name>ansp</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ansu</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ansv</name>
- <value></value>
+ <value/>
</testinput>
<expected>
<name>prt1</name>
@@ -331,22 +329,22 @@ sansc:transpose(sansn).ansp;
</qtest>
<qtest>
<testcase>3</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>ta1</value>
</testinput>
<testinput>
<name>ansp</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ansu</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ansv</name>
- <value></value>
+ <value/>
</testinput>
<expected>
<name>prt1</name>
@@ -357,7 +355,7 @@ sansc:transpose(sansn).ansp;
</qtest>
<qtest>
<testcase>4</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>ta1</value>
@@ -383,7 +381,7 @@ sansc:transpose(sansn).ansp;
</qtest>
<qtest>
<testcase>5</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>ta1</value>
@@ -408,5 +406,4 @@ sansc:transpose(sansn).ansp;
</expected>
</qtest>
</question>
-
</quiz>
diff --git a/samplequestions/stacklibrary/Topics/LinearAlgebra/Linear-dependence.xml b/samplequestions/stacklibrary/Topics/LinearAlgebra/Linear-dependence.xml
index a01d75ebfa1a4b706184f9fabf5f4f87d0fe3e2a..efa1f91331a403b53cbbbc22866324fea1547f1b 100755
--- a/samplequestions/stacklibrary/Topics/LinearAlgebra/Linear-dependence.xml
+++ b/samplequestions/stacklibrary/Topics/LinearAlgebra/Linear-dependence.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 112268 -->
<question type="stack">
<name>
<text>Linear dependence</text>
@@ -20,7 +19,7 @@ If such values do not exist, enter <code>null</code> for all entries. </p>
<defaultgrade>1</defaultgrade>
<penalty>0</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2023010400</text>
</stackversion>
@@ -71,7 +70,7 @@ detmatrix:determinant(matrixv312);</text>
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans1</name>
<type>algebraic</type>
@@ -79,16 +78,16 @@ detmatrix:determinant(matrixv312);</text>
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
<forbidwords>determinant</forbidwords>
- <allowwords></allowwords>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>1</requirelowestterms>
<checkanswertype>1</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans2</name>
@@ -97,16 +96,16 @@ detmatrix:determinant(matrixv312);</text>
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
<forbidwords>determinant</forbidwords>
- <allowwords></allowwords>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>1</requirelowestterms>
<checkanswertype>1</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<prt>
<name>Result</name>
@@ -114,56 +113,56 @@ detmatrix:determinant(matrixv312);</text>
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans1</sans>
<tans>correctanswer[1]</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>0.5</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>1</truenextnode>
<trueanswernote>Result-0-T </trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>1</falsenextnode>
<falseanswernote>Result-0-F </falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans2</sans>
<tans>correctanswer[2]</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>+</truescoremode>
<truescore>0.5</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>Result-1-T </trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>Result-1-F </falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -187,7 +186,7 @@ detmatrix:determinant(matrixv312);</text>
<deployedseed>1988758674</deployedseed>
<qtest>
<testcase>1</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>correctanswer[1]</value>
@@ -205,7 +204,7 @@ detmatrix:determinant(matrixv312);</text>
</qtest>
<qtest>
<testcase>2</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>correctanswer[1]-1</value>
@@ -222,5 +221,4 @@ detmatrix:determinant(matrixv312);</text>
</expected>
</qtest>
</question>
-
</quiz>
diff --git a/samplequestions/stacklibrary/Topics/LinearAlgebra/Linear-system.xml b/samplequestions/stacklibrary/Topics/LinearAlgebra/Linear-system.xml
index 626ab07014b6787e9ba54d14dbb000c4661034ea..197abee130853b5a0d7f179b6ebf38851d0ed0fa 100755
--- a/samplequestions/stacklibrary/Topics/LinearAlgebra/Linear-system.xml
+++ b/samplequestions/stacklibrary/Topics/LinearAlgebra/Linear-system.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 112379 -->
<question type="stack">
<name>
<text>Linear systems</text>
@@ -66,7 +65,7 @@ Evaluating this at \(k={@k2@}\) gives
<defaultgrade>6</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2023121100</text>
</stackversion>
@@ -123,8 +122,7 @@ WS:solve(flatten(args(submatrix(WTAM2,5).transpose([v1,v2,v3,v4])-submatrix(WTAM
WS:stack_strip_percent(first(WS),[t]);
taw1: maplist(lambda([ex2], rhs(first(sublist(WS,lambda([ex],lhs(ex)=ex2))))),[v1,v2,v3,v4]);
-taw1: transpose(apply(matrix,[taw1]));
-</text>
+taw1: transpose(apply(matrix,[taw1]));</text>
</questionvariables>
<specificfeedback format="html">
<text>[[feedback:prt1]]
@@ -133,7 +131,7 @@ taw1: transpose(apply(matrix,[taw1]));
[[feedback:prt4]]</text>
</specificfeedback>
<questionnote format="moodle_auto_format">
- <text>\( {@QAM@} \rightarrow {@TAM1@} \) Inconsistent: \(k={@k1@}\). Infinite solutions: \(k={@k2@}\). \(\mathbf{x} = {@ta4@} \). </text>
+ <text>\( {@QAM@} \rightarrow {@TAM1@} \) Inconsistent: \(k={@k1@}\). Infinite solutions: \(k={@k2@}\). \(\mathbf{x} = {@ta4@} \).</text>
</questionnote>
<questiondescription format="moodle_auto_format">
<text>This question is distributed as part of the STACK source code as an example. This is licenced as Creative Commons Attribution-ShareAlike 4.0 International License.</text>
@@ -158,7 +156,7 @@ taw1: transpose(apply(matrix,[taw1]));
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans1</name>
<type>matrix</type>
@@ -166,16 +164,16 @@ taw1: transpose(apply(matrix,[taw1]));
<boxsize>3</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans2</name>
@@ -186,14 +184,14 @@ taw1: transpose(apply(matrix,[taw1]));
<insertstars>0</insertstars>
<syntaxhint>{?,?}</syntaxhint>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>1</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans3</name>
@@ -202,16 +200,16 @@ taw1: transpose(apply(matrix,[taw1]));
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>1</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans4</name>
@@ -220,16 +218,16 @@ taw1: transpose(apply(matrix,[taw1]));
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<prt>
<name>prt1</name>
@@ -238,29 +236,27 @@ taw1: transpose(apply(matrix,[taw1]));
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
<text>/* Pick our the entries which need to be zero. */
-sa1:setify(flatten(makelist(makelist(ans1[l1,l2],l2,1,l1-1),l1,2,first(matrix_size(ans1)))));
-
-</text>
+sa1:setify(flatten(makelist(makelist(ans1[l1,l2],l2,1,l1-1),l1,2,first(matrix_size(ans1)))));</text>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>Sets</answertest>
<sans>sa1</sans>
<tans>{0}</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>0.2</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>1</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
@@ -269,23 +265,23 @@ sa1:setify(flatten(makelist(makelist(ans1[l1,l2],l2,1,l1-1),l1,2,first(matrix_si
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>rref(ans1)</sans>
<tans>rref(TAM1)</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-2-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-2-F</falseanswernote>
<falsefeedback format="html">
@@ -299,31 +295,31 @@ sa1:setify(flatten(makelist(makelist(ans1[l1,l2],l2,1,l1-1),l1,2,first(matrix_si
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>Sets</answertest>
<sans>ans2</sans>
<tans>ta2</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt2-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt2-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -338,40 +334,40 @@ sd1:determinant(at(SM2,k=ans3))</text>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans3</sans>
<tans>ta3</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt3-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>1</falsenextnode>
<falseanswernote>prt3-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>sd1</sans>
<tans>0</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt3-2-T</trueanswernote>
<truefeedback format="html">
@@ -379,7 +375,7 @@ sd1:determinant(at(SM2,k=ans3))</text>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt3-2-F</falseanswernote>
<falsefeedback format="html">
@@ -394,20 +390,19 @@ sd1:determinant(at(SM2,k=ans3))</text>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
<text>v4:listofvars(ans4);
-SM2:submatrix(ans1,5);
-</text>
+SM2:submatrix(ans1,5);</text>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>length(v4)</sans>
<tans>1</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>0.3</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>1</truenextnode>
<trueanswernote>prt4-1-T</trueanswernote>
<truefeedback format="html">
@@ -415,7 +410,7 @@ SM2:submatrix(ans1,5);
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>1</falsenextnode>
<falseanswernote>prt4-1-F</falseanswernote>
<falsefeedback format="html">
@@ -424,23 +419,23 @@ SM2:submatrix(ans1,5);
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>at(QA,k=ans3).ans4</sans>
<tans>Qb</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>+</truescoremode>
<truescore>0.7</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt4-2-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>2</falsenextnode>
<falseanswernote>prt4-2-F</falseanswernote>
<falsefeedback format="html">
@@ -452,15 +447,15 @@ In fact
</node>
<node>
<name>2</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>at(SM2,k=ans3).ans4</sans>
<tans>submatrix(ans1,1,2,3,4)</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>+</truescoremode>
<truescore>0.7</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt4-3-T</trueanswernote>
<truefeedback format="html">
@@ -471,7 +466,7 @@ So, although your row reductions contain a mistake you have correctly solved the
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt4-3-F</falseanswernote>
<falsefeedback format="html">
@@ -490,7 +485,7 @@ So, no follow-through marking applies here either.</text>
<deployedseed>1814590374</deployedseed>
<qtest>
<testcase>1</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>TAM1</value>
@@ -534,7 +529,7 @@ So, no follow-through marking applies here either.</text>
</qtest>
<qtest>
<testcase>2</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>WTAM1</value>
@@ -577,5 +572,4 @@ So, no follow-through marking applies here either.</text>
</expected>
</qtest>
</question>
-
</quiz>
diff --git a/samplequestions/stacklibrary/Topics/LinearAlgebra/Matrix-Algebra-give-examples.xml b/samplequestions/stacklibrary/Topics/LinearAlgebra/Matrix-Algebra-give-examples.xml
index 3ea731c855d0fb07021f7101e7b159cfc8f50de4..8b20b138cc991336a1d8c8100ae1e19388d0374c 100644
--- a/samplequestions/stacklibrary/Topics/LinearAlgebra/Matrix-Algebra-give-examples.xml
+++ b/samplequestions/stacklibrary/Topics/LinearAlgebra/Matrix-Algebra-give-examples.xml
@@ -1,70 +1,69 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 4524 -->
<question type="stack">
<name>
<text>Matrix Algebra - give an example</text>
</name>
<questiontext format="html">
- <text><![CDATA[<ol>
- <li>Give an example of matrices \(A\), \(B\) such that \(A\cdot B =\left( \begin{array}{cc} 0 & 0 \\ 0 & 0 \end{array} \right) \) and both \(A , \, B \neq \left( \begin{array}{cc} 0 & 0 \\ 0 & 0 \end{array} \right) \)
-
-<div style="padding:0.5em">\(A=\)[[input:a1A]][[validation:a1A]] , \(B=\)[[input:a1B]][[validation:a1B]][[feedback:prt1]]</div></li>
-<li>Give a different pair of nonzero matrices \(C\), \(D\) such that \(C\cdot D =\left( \begin{array}{cc} 0 & 0 \\ 0 & 0 \end{array} \right) \).
-<div style="padding:0.5em">\(C=\)[[input:a2A]][[validation:a2A]] , \(D=\)[[input:a2B]][[validation:a2B]][[feedback:prt2]]</div></li>
-<li>Consider the following statement:
-<p>There do not exist \(2 \times 2 \) matrices \(E, \, F\) with rank\((E)\)\(=\)rank\((F)\)\(=2\) such that \(E\cdot F = \left( \begin{array}{cc} 0 & 0 \\ 0 & 0 \end{array} \right) \).</p>
-<p>Select whether it is true or false, and give either a proof or counterexample as appropriate.</p>
- <div>This statement is [[input:a4]][[validation:a4]] [[feedback:prt4]]</div>
- [[reveal input="a4" value="true"]]
- <p>Proof:</p>[[input:a4_true]][[validation:a4_true]]
- [[/reveal]]
- [[reveal input="a4" value="false"]]
- <p>Counterexample:</p>
- <div style="padding:0.5em">\(E=\)[[input:a3A]][[validation:a3A]] , \(F=\)[[input:a3B]] [[validation:a3B]] [[feedback:prt3]]</div>
- [[/reveal]]
- </li>
+ <text><![CDATA[<ol>
+ <li>Give an example of matrices \(A\), \(B\) such that \(A\cdot B =\left( \begin{array}{cc} 0 & 0 \\ 0 & 0 \end{array} \right) \) and both \(A , \, B \neq \left( \begin{array}{cc} 0 & 0 \\ 0 & 0 \end{array} \right) \)
+
+<div style="padding:0.5em">\(A=\)[[input:a1A]][[validation:a1A]] , \(B=\)[[input:a1B]][[validation:a1B]][[feedback:prt1]]</div></li>
+<li>Give a different pair of nonzero matrices \(C\), \(D\) such that \(C\cdot D =\left( \begin{array}{cc} 0 & 0 \\ 0 & 0 \end{array} \right) \).
+<div style="padding:0.5em">\(C=\)[[input:a2A]][[validation:a2A]] , \(D=\)[[input:a2B]][[validation:a2B]][[feedback:prt2]]</div></li>
+<li>Consider the following statement:
+<p>There do not exist \(2 \times 2 \) matrices \(E, \, F\) with rank\((E)\)\(=\)rank\((F)\)\(=2\) such that \(E\cdot F = \left( \begin{array}{cc} 0 & 0 \\ 0 & 0 \end{array} \right) \).</p>
+<p>Select whether it is true or false, and give either a proof or counterexample as appropriate.</p>
+ <div>This statement is [[input:a4]][[validation:a4]] [[feedback:prt4]]</div>
+ [[reveal input="a4" value="true"]]
+ <p>Proof:</p>[[input:a4_true]][[validation:a4_true]]
+ [[/reveal]]
+ [[reveal input="a4" value="false"]]
+ <p>Counterexample:</p>
+ <div style="padding:0.5em">\(E=\)[[input:a3A]][[validation:a3A]] , \(F=\)[[input:a3B]] [[validation:a3B]] [[feedback:prt3]]</div>
+ [[/reveal]]
+ </li>
</ol>]]></text>
</questiontext>
<generalfeedback format="html">
- <text><![CDATA[<h4>Worked Solution</h4>
-<p>We denote the row of matrix \(A\) by \(A_i\), columns of matrix \(B\) by \(b_j\) and columns of matrix \(AB\) by \((ab)_j\). Then the matrix \(AB={@zmatrix@}\) are made up of two column vectors, namely \((ab)_1={@cvec@}\) and \((ab)_2={@cvec@}\). <p></p>
-Thus, we break this problem down into two parts which are \((ab)_1=A \cdot b_1={@cvec@}\) and \((ab)_2=A \cdot b_2={@cvec@}\). <p></p>
-Note that this is a linear transformation from \(\mathbb{R}^2\) to \(\mathbb{R}^2\) as \(A\) maps \(b_1\) to \({@cvec@}\) and \(b_2\) to \({@cvec@}\).
-</p>
-<p>By the dimension theorem, \(\text{dim}(\mathbb{R}^2)= \text{nullity}(A)+\text{rank}(A)\).
-As \(A\neq{@zmatrix@}\), \(\text{nullity}(A)<2\). On the other hand, \(b_1\neq{@cvec@}\) and \(b_2\neq{@cvec@}\) is in the null space of \(A\) so, \(\text{nullity}(A)\neq0\) which implies that \(\text{nullity}(A)=1\). This means that the rows or columns of the matrix \(A\) are linearly dependent.
-</p>
-<p>
-Again, from the dimension theorem, we know that \(\text{rank}(B)\neq2\) since if \(\text{rank}(B)=2\) then \(\text{nullity}(A)=2\) which contradicts our assumption that \(A\) cannot be the zero matrix. From our assumption, we also know that \(\text{rank}(B)\neq0\) as \(B\) cannot be the zero matrix. Hence, similar to \(A\), \(B\) has \(\text{rank}=1\).</p>
-<p>
-To find an example of matrices \(A,B\) which satisfies the condition, we set \(A\) to be any matrix with linearly dependent columns or rows. Then solve for \(B\).
-For example, \(A\) can be of the form \(\left( \begin{array}{cc} a & a \\ ca & ca \end{array} \right)\) for any \(c,a \in \mathbb{R}\).</p><p>
+ <text><![CDATA[<h4>Worked Solution</h4>
+<p>We denote the row of matrix \(A\) by \(A_i\), columns of matrix \(B\) by \(b_j\) and columns of matrix \(AB\) by \((ab)_j\). Then the matrix \(AB={@zmatrix@}\) are made up of two column vectors, namely \((ab)_1={@cvec@}\) and \((ab)_2={@cvec@}\). <p></p>
+Thus, we break this problem down into two parts which are \((ab)_1=A \cdot b_1={@cvec@}\) and \((ab)_2=A \cdot b_2={@cvec@}\). <p></p>
+Note that this is a linear transformation from \(\mathbb{R}^2\) to \(\mathbb{R}^2\) as \(A\) maps \(b_1\) to \({@cvec@}\) and \(b_2\) to \({@cvec@}\).
+</p>
+<p>By the dimension theorem, \(\text{dim}(\mathbb{R}^2)= \text{nullity}(A)+\text{rank}(A)\).
+As \(A\neq{@zmatrix@}\), \(\text{nullity}(A)<2\). On the other hand, \(b_1\neq{@cvec@}\) and \(b_2\neq{@cvec@}\) is in the null space of \(A\) so, \(\text{nullity}(A)\neq0\) which implies that \(\text{nullity}(A)=1\). This means that the rows or columns of the matrix \(A\) are linearly dependent.
+</p>
+<p>
+Again, from the dimension theorem, we know that \(\text{rank}(B)\neq2\) since if \(\text{rank}(B)=2\) then \(\text{nullity}(A)=2\) which contradicts our assumption that \(A\) cannot be the zero matrix. From our assumption, we also know that \(\text{rank}(B)\neq0\) as \(B\) cannot be the zero matrix. Hence, similar to \(A\), \(B\) has \(\text{rank}=1\).</p>
+<p>
+To find an example of matrices \(A,B\) which satisfies the condition, we set \(A\) to be any matrix with linearly dependent columns or rows. Then solve for \(B\).
+For example, \(A\) can be of the form \(\left( \begin{array}{cc} a & a \\ ca & ca \end{array} \right)\) for any \(c,a \in \mathbb{R}\).</p><p>
One such example is \(A={@ta1A@}\). An example for \(B\) which satisfies the condition would be \(B={@ta1B@}\).</p>]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2024111500</text>
</stackversion>
<questionvariables>
- <text>ta1A:matrix([1,1],[2,2]);
-ta1B:matrix([2,2],[-2,-2]);
-ta2A:matrix([1,1],[-1,-1]);
-ta2B:matrix([1,1],[-1,-1]);
-ta3A:matrix([null,null],[null,null]);
-ta3B:matrix([null,null],[null,null]);
-ta4:true;
-zmatrix:matrix([0,0],[0,0]);
+ <text>ta1A:matrix([1,1],[2,2]);
+ta1B:matrix([2,2],[-2,-2]);
+ta2A:matrix([1,1],[-1,-1]);
+ta2B:matrix([1,1],[-1,-1]);
+ta3A:matrix([null,null],[null,null]);
+ta3B:matrix([null,null],[null,null]);
+ta4:true;
+zmatrix:matrix([0,0],[0,0]);
cvec:matrix([0],[0]);</text>
</questionvariables>
<specificfeedback format="html">
- <text></text>
+ <text/>
</specificfeedback>
<questionnote format="moodle_auto_format">
- <text></text>
+ <text/>
</questionnote>
<questiondescription format="moodle_auto_format">
<text>This question is distributed as part of the STACK source code as an example. This is licenced as Creative Commons Attribution-ShareAlike 4.0 International License.</text>
@@ -89,7 +88,7 @@ cvec:matrix([0],[0]);</text>
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>a1A</name>
<type>matrix</type>
@@ -97,16 +96,16 @@ cvec:matrix([0],[0]);</text>
<boxsize>1</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>a1B</name>
@@ -115,16 +114,16 @@ cvec:matrix([0],[0]);</text>
<boxsize>1</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>a2A</name>
@@ -133,16 +132,16 @@ cvec:matrix([0],[0]);</text>
<boxsize>1</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>a2B</name>
@@ -151,16 +150,16 @@ cvec:matrix([0],[0]);</text>
<boxsize>1</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>a3A</name>
@@ -169,10 +168,10 @@ cvec:matrix([0],[0]);</text>
<boxsize>1</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
@@ -187,10 +186,10 @@ cvec:matrix([0],[0]);</text>
<boxsize>1</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
@@ -205,16 +204,16 @@ cvec:matrix([0],[0]);</text>
<boxsize>3</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>a4_true</name>
@@ -223,16 +222,16 @@ cvec:matrix([0],[0]);</text>
<boxsize>70</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>1</showvalidation>
- <options></options>
+ <options/>
</input>
<prt>
<name>prt1</name>
@@ -240,47 +239,47 @@ cvec:matrix([0],[0]);</text>
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text>a: a1A;
-b:a1B;
-if notequal(rank(a),0) and notequal(rank(b),0) and rank(a.b)=0 then Mark:1 elseif rank(a)=0 or rank(b)=0 or (rank(a)=0 and rank(b)=1) then Mark:-1 elseif notequal(rank(a.b),0) then Mark:0;
+ <text>a: a1A;
+b:a1B;
+if notequal(rank(a),0) and notequal(rank(b),0) and rank(a.b)=0 then Mark:1 elseif rank(a)=0 or rank(b)=0 or (rank(a)=0 and rank(b)=1) then Mark:-1 elseif notequal(rank(a.b),0) then Mark:0;
/*Mark=1 when correct, Mark=0 when A multiplied by B does not give the zero matrix, Mark=-1 when A or B or both = the zero matrix.*/</text>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>Mark</sans>
<tans>1</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>1</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>Mark</sans>
<tans>0</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>+</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-2-T</trueanswernote>
<truefeedback format="html">
@@ -288,24 +287,24 @@ if notequal(rank(a),0) and notequal(rank(b),0) and rank(a.b)=0 then Mark:1 elsei
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>2</falsenextnode>
<falseanswernote>prt1-2-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>2</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>Mark</sans>
<tans>-1</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>+</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-3-T</trueanswernote>
<truefeedback format="html">
@@ -313,11 +312,11 @@ if notequal(rank(a),0) and notequal(rank(b),0) and rank(a.b)=0 then Mark:1 elsei
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-3-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -327,49 +326,49 @@ if notequal(rank(a),0) and notequal(rank(b),0) and rank(a.b)=0 then Mark:1 elsei
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text>a: a2A;
-b:a2B;
-c:a1A;
-d:a1B;
-if (a=d and b=c) then Mark:-2 elseif (a=c and b=d) or a=c or b=d then Mark:-2 elseif notequal(rank(a),0) and notequal(rank(b),0) and rank(a.b)=0 then Mark:1 elseif rank(a)=0 or rank(b)=0 or (rank(a)=0 and rank(b)=1) then Mark:-1 elseif notequal(rank(a.b),0) then Mark:0;
+ <text>a: a2A;
+b:a2B;
+c:a1A;
+d:a1B;
+if (a=d and b=c) then Mark:-2 elseif (a=c and b=d) or a=c or b=d then Mark:-2 elseif notequal(rank(a),0) and notequal(rank(b),0) and rank(a.b)=0 then Mark:1 elseif rank(a)=0 or rank(b)=0 or (rank(a)=0 and rank(b)=1) then Mark:-1 elseif notequal(rank(a.b),0) then Mark:0;
/*Mark=1 when correct, Mark=0 when A multiplied by B does not give the zero matrix, Mark=-1 when A or B or both = the zero matrix, Mark=-2 if A and B have been given as the answer in part(a) of the question*/</text>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>Mark</sans>
<tans>1</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt2-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>1</falsenextnode>
<falseanswernote>prt2-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>Mark</sans>
<tans>0</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>+</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt2-2-T</trueanswernote>
<truefeedback format="html">
@@ -377,24 +376,24 @@ if (a=d and b=c) then Mark:-2 elseif (a=c and b=d) or a=c or b=d then Mark:-2 el
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>2</falsenextnode>
<falseanswernote>prt2-2-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>2</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>Mark</sans>
<tans>-1</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>+</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt2-3-T</trueanswernote>
<truefeedback format="html">
@@ -402,24 +401,24 @@ if (a=d and b=c) then Mark:-2 elseif (a=c and b=d) or a=c or b=d then Mark:-2 el
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>3</falsenextnode>
<falseanswernote>prt2-3-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>3</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>Mark</sans>
<tans>-2</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>+</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt2-4-T</trueanswernote>
<truefeedback format="html">
@@ -427,11 +426,11 @@ if (a=d and b=c) then Mark:-2 elseif (a=c and b=d) or a=c or b=d then Mark:-2 el
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt2-4-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -441,48 +440,48 @@ if (a=d and b=c) then Mark:-2 elseif (a=c and b=d) or a=c or b=d then Mark:-2 el
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text><![CDATA[a:a3A;
-b:a3B;
-if (a=ta3A and b=ta3B) then Mark:1 elseif notequal(rank(a.b),0) then Mark:0 else Mark:-1;
-
+ <text><![CDATA[a:a3A;
+b:a3B;
+if (a=ta3A and b=ta3B) then Mark:1 elseif notequal(rank(a.b),0) then Mark:0 else Mark:-1;
+
/*Mark=1 when student inputs NA, Mark=0 when student gives matrices that does not multiply to give the zero maatrix, Mark=-1 for all other cases (rank of A and B <2) */]]></text>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>Mark</sans>
<tans>1</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt3-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>1</falsenextnode>
<falseanswernote>prt3-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>Mark</sans>
<tans>0</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>+</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt3-2-T</trueanswernote>
<truefeedback format="html">
@@ -490,24 +489,24 @@ if (a=ta3A and b=ta3B) then Mark:1 elseif notequal(rank(a.b),0) then Mark:0 else
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>2</falsenextnode>
<falseanswernote>prt3-2-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>2</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>Mark</sans>
<tans>-1</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>+</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt3-3-T</trueanswernote>
<truefeedback format="html">
@@ -515,11 +514,11 @@ if (a=ta3A and b=ta3B) then Mark:1 elseif notequal(rank(a.b),0) then Mark:0 else
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt3-3-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -529,37 +528,37 @@ if (a=ta3A and b=ta3B) then Mark:1 elseif notequal(rank(a.b),0) then Mark:0 else
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>a4</sans>
<tans>ta4</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt4-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt4-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
<qtest>
<testcase>1</testcase>
- <description></description>
+ <description/>
<testinput>
<name>a1A</name>
<value>ta1A</value>
@@ -605,7 +604,7 @@ if (a=ta3A and b=ta3B) then Mark:1 elseif notequal(rank(a.b),0) then Mark:0 else
</qtest>
<qtest>
<testcase>2</testcase>
- <description></description>
+ <description/>
<testinput>
<name>a1A</name>
<value>ta1A</value>
@@ -651,7 +650,7 @@ if (a=ta3A and b=ta3B) then Mark:1 elseif notequal(rank(a.b),0) then Mark:0 else
</qtest>
<qtest>
<testcase>3</testcase>
- <description></description>
+ <description/>
<testinput>
<name>a1A</name>
<value>ta1A</value>
@@ -697,7 +696,7 @@ if (a=ta3A and b=ta3B) then Mark:1 elseif notequal(rank(a.b),0) then Mark:0 else
</qtest>
<qtest>
<testcase>4</testcase>
- <description></description>
+ <description/>
<testinput>
<name>a1A</name>
<value>ta1A</value>
@@ -756,5 +755,4 @@ if (a=ta3A and b=ta3B) then Mark:1 elseif notequal(rank(a.b),0) then Mark:0 else
</expected>
</qtest>
</question>
-
-</quiz>
\ No newline at end of file
+</quiz>
diff --git a/samplequestions/stacklibrary/Topics/LinearAlgebra/Proof-dot-product.xml b/samplequestions/stacklibrary/Topics/LinearAlgebra/Proof-dot-product.xml
index 3e00c3f413de920531d8966e3c19ccc7324af6c9..11bb69fc3b8495015d8929ea5bd86b0b82e4619a 100755
--- a/samplequestions/stacklibrary/Topics/LinearAlgebra/Proof-dot-product.xml
+++ b/samplequestions/stacklibrary/Topics/LinearAlgebra/Proof-dot-product.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 112263 -->
<question type="stack">
<name>
<text>Dot product formula proof comprehension</text>
@@ -87,7 +86,7 @@
<defaultgrade>3</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2023010400</text>
</stackversion>
@@ -99,8 +98,7 @@ ta32:2;
ta33:1;
ta34:2;
ta35:1;
-ta36:5;
-]]></text>
+ta36:5;]]></text>
</questionvariables>
<specificfeedback format="html">
<text><![CDATA[<div class="proof-line">
@@ -160,7 +158,7 @@ ta36:5;
</div>]]></text>
</specificfeedback>
<questionnote format="moodle_auto_format">
- <text></text>
+ <text/>
</questionnote>
<questiondescription format="moodle_auto_format">
<text>This question is distributed as part of the STACK source code as an example. This is licenced as Creative Commons Attribution-ShareAlike 4.0 International License.</text>
@@ -185,7 +183,7 @@ ta36:5;
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans1</name>
<type>dropdown</type>
@@ -193,16 +191,16 @@ ta36:5;
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans31</name>
@@ -211,16 +209,16 @@ ta36:5;
<boxsize>3</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans32</name>
@@ -229,16 +227,16 @@ ta36:5;
<boxsize>3</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans33</name>
@@ -247,16 +245,16 @@ ta36:5;
<boxsize>3</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans34</name>
@@ -265,16 +263,16 @@ ta36:5;
<boxsize>3</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans35</name>
@@ -283,16 +281,16 @@ ta36:5;
<boxsize>3</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans36</name>
@@ -301,16 +299,16 @@ ta36:5;
<boxsize>3</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<prt>
<name>prt1</name>
@@ -318,31 +316,31 @@ ta36:5;
<autosimplify>1</autosimplify>
<feedbackstyle>2</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans1</sans>
<tans>ta1</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -352,31 +350,31 @@ ta36:5;
<autosimplify>1</autosimplify>
<feedbackstyle>2</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans31</sans>
<tans>ta31</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt31-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt31-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -386,31 +384,31 @@ ta36:5;
<autosimplify>1</autosimplify>
<feedbackstyle>2</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans32</sans>
<tans>ta32</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt32-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt32-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -420,31 +418,31 @@ ta36:5;
<autosimplify>1</autosimplify>
<feedbackstyle>2</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans33</sans>
<tans>ta33</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt33-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt33-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -454,31 +452,31 @@ ta36:5;
<autosimplify>1</autosimplify>
<feedbackstyle>2</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans34</sans>
<tans>ta34</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt34-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt34-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -488,31 +486,31 @@ ta36:5;
<autosimplify>1</autosimplify>
<feedbackstyle>2</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans35</sans>
<tans>ta35</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt35-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt35-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -522,37 +520,37 @@ ta36:5;
<autosimplify>1</autosimplify>
<feedbackstyle>2</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans36</sans>
<tans>ta36</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt36-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt36-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
<qtest>
<testcase>1</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>ta1</value>
@@ -625,5 +623,4 @@ ta36:5;
</expected>
</qtest>
</question>
-
</quiz>
diff --git a/samplequestions/stacklibrary/Topics/LinearAlgebra/Proof-gaps-linear-dependence.xml b/samplequestions/stacklibrary/Topics/LinearAlgebra/Proof-gaps-linear-dependence.xml
index 7a6d32534db9cf2f152051207792f9773f15fe1d..2f0aba6e85146aba8166b6ae127e8b70cdad8a2c 100755
--- a/samplequestions/stacklibrary/Topics/LinearAlgebra/Proof-gaps-linear-dependence.xml
+++ b/samplequestions/stacklibrary/Topics/LinearAlgebra/Proof-gaps-linear-dependence.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 112264 -->
<question type="stack">
<name>
<text>Span proof</text>
@@ -57,12 +56,12 @@ May we assume that \(a,b,c\) are not all zero?
</ol>]]></text>
</questiontext>
<generalfeedback format="moodle_auto_format">
- <text></text>
+ <text/>
</generalfeedback>
<defaultgrade>6</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2023010400</text>
</stackversion>
@@ -139,7 +138,7 @@ For the direction \(U \subseteq W\).
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans1</name>
<type>dropdown</type>
@@ -147,10 +146,10 @@ For the direction \(U \subseteq W\).
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
@@ -165,10 +164,10 @@ For the direction \(U \subseteq W\).
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
@@ -183,10 +182,10 @@ For the direction \(U \subseteq W\).
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
@@ -201,10 +200,10 @@ For the direction \(U \subseteq W\).
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
@@ -219,10 +218,10 @@ For the direction \(U \subseteq W\).
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
@@ -237,16 +236,16 @@ For the direction \(U \subseteq W\).
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ansv11</name>
@@ -255,16 +254,16 @@ For the direction \(U \subseteq W\).
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ansv12</name>
@@ -273,16 +272,16 @@ For the direction \(U \subseteq W\).
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ansv13</name>
@@ -291,16 +290,16 @@ For the direction \(U \subseteq W\).
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ansv21</name>
@@ -309,16 +308,16 @@ For the direction \(U \subseteq W\).
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ansv22</name>
@@ -327,16 +326,16 @@ For the direction \(U \subseteq W\).
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ansv23</name>
@@ -345,16 +344,16 @@ For the direction \(U \subseteq W\).
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ansxd</name>
@@ -363,16 +362,16 @@ For the direction \(U \subseteq W\).
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ansxd2</name>
@@ -381,10 +380,10 @@ For the direction \(U \subseteq W\).
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
@@ -398,31 +397,31 @@ For the direction \(U \subseteq W\).
<autosimplify>1</autosimplify>
<feedbackstyle>3</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans1</sans>
<tans>taa1</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -432,31 +431,31 @@ For the direction \(U \subseteq W\).
<autosimplify>1</autosimplify>
<feedbackstyle>3</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans2</sans>
<tans>taa2</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt2-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt2-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -466,31 +465,31 @@ For the direction \(U \subseteq W\).
<autosimplify>1</autosimplify>
<feedbackstyle>3</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans3</sans>
<tans>taa3</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt3-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt3-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -500,31 +499,31 @@ For the direction \(U \subseteq W\).
<autosimplify>1</autosimplify>
<feedbackstyle>3</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans4</sans>
<tans>taa4</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt4-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt4-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -534,31 +533,31 @@ For the direction \(U \subseteq W\).
<autosimplify>1</autosimplify>
<feedbackstyle>3</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans5</sans>
<tans>taa5</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt5-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt5-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -568,27 +567,27 @@ For the direction \(U \subseteq W\).
<autosimplify>1</autosimplify>
<feedbackstyle>2</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ansf1</sans>
<tans>false</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prtf1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prtf1-1-F</falseanswernote>
<falsefeedback format="html">
@@ -606,27 +605,27 @@ For the direction \(U \subseteq W\).
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>sa</sans>
<tans>tav1</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prtv1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prtv1-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -640,54 +639,52 @@ For the direction \(U \subseteq W\).
sa2:ev(expand(ansv21*(x+y)+ansv22*(y+z)+ansv23*(z+x)), simp);
scx:ev(ratsimp(ansv21+ansv23),simp);
scy:ev(ratsimp(ansv21+ansv22),simp);
-scz:ev(ratsimp(ansv22+ansv23),simp);
-
-</text>
+scz:ev(ratsimp(ansv22+ansv23),simp);</text>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>sa</sans>
<tans>tav2</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prtv2-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>1</falsenextnode>
<falseanswernote>prtv2-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>sa2</sans>
<tans>a*x+b*y+c*z</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prtv2-2-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prtv2-2-F</falseanswernote>
<falsefeedback format="html">
@@ -706,62 +703,62 @@ so you must have done something wrong!</text>
<autosimplify>1</autosimplify>
<feedbackstyle>2</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ansxd</sans>
<tans>taaxd</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>0.5</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>1</truenextnode>
<trueanswernote>prtxd-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prtxd-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ansxd2</sans>
<tans>3</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>+</truescoremode>
<truescore>0.5</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prtxd-2-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prtxd-2-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
<qtest>
<testcase>1</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>first(mcq_correct(ta1))</value>
@@ -875,54 +872,54 @@ so you must have done something wrong!</text>
</qtest>
<qtest>
<testcase>2</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ans2</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ans3</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ans4</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ans5</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ansf1</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ansv11</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ansv12</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ansv13</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ansv21</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ansv22</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ansv23</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ansxd</name>
@@ -930,54 +927,54 @@ so you must have done something wrong!</text>
</testinput>
<testinput>
<name>ansxd2</name>
- <value></value>
+ <value/>
</testinput>
<expected>
<name>prt1</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
<expected>
<name>prt2</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
<expected>
<name>prt3</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
<expected>
<name>prt4</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
<expected>
<name>prt5</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
<expected>
<name>prtf1</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
<expected>
<name>prtv1</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
<expected>
<name>prtv2</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
<expected>
@@ -988,5 +985,4 @@ so you must have done something wrong!</text>
</expected>
</qtest>
</question>
-
</quiz>
diff --git a/samplequestions/stacklibrary/Topics/LinearAlgebra/Show-Ax-forms-a-subspace-Parsons.xml b/samplequestions/stacklibrary/Topics/LinearAlgebra/Show-Ax-forms-a-subspace-Parsons.xml
index 28497df70df128ea05b3c5f887b7dbb913a740fe..a63a96cd714f3f693f80e1f09d2dbc8119c825a6 100644
--- a/samplequestions/stacklibrary/Topics/LinearAlgebra/Show-Ax-forms-a-subspace-Parsons.xml
+++ b/samplequestions/stacklibrary/Topics/LinearAlgebra/Show-Ax-forms-a-subspace-Parsons.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 129900 -->
<question type="stack">
<name>
<text>Drag/drop: forms a subspace</text>
@@ -20,7 +19,7 @@
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2024072400</text>
</stackversion>
@@ -51,8 +50,7 @@ ta2:proof(proof_c("ass1","cs1"),proof_c(proof("ca1","ca2","ca3","ca4"), proof("c
/* Generate the alternative proofs. */
tal:append(proof_alternatives(ta),proof_alternatives(ta2));
/* Create a set of flattened proofs. */
-tas:setify(map(proof_flatten, tal));
-]]></text>
+tas:setify(map(proof_flatten, tal));]]></text>
</questionvariables>
<specificfeedback format="html">
<text>[[feedback:prt1]]</text>
@@ -83,7 +81,7 @@ tas:setify(map(proof_flatten, tal));
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans1</name>
<type>string</type>
@@ -91,16 +89,16 @@ tas:setify(map(proof_flatten, tal));
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<prt>
<name>prt1</name>
@@ -113,23 +111,23 @@ tas:setify(map(proof_flatten, tal));
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>pd</sans>
<tans>0</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
@@ -157,5 +155,4 @@ tas:setify(map(proof_flatten, tal));
</expected>
</qtest>
</question>
-
</quiz>
diff --git a/samplequestions/stacklibrary/Topics/ODE_2nd_order_linear.xml b/samplequestions/stacklibrary/Topics/ODE_2nd_order_linear.xml
index bc47ef6bbcbe903d35a552102533b3d588410351..4cc71b9594619f19b20ec9f134289b7212a768e3 100644
--- a/samplequestions/stacklibrary/Topics/ODE_2nd_order_linear.xml
+++ b/samplequestions/stacklibrary/Topics/ODE_2nd_order_linear.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 12697 -->
<question type="stack">
<name>
<text>ODE_2nd_order_linear_1</text>
@@ -9,12 +8,12 @@
<text><![CDATA[<p>Find the general solution to \[ {@q@} =0 \] \(y(t) =\; \)[[input:ans1]] [[validation:ans1]]</p>]]></text>
</questiontext>
<generalfeedback format="html">
- <text></text>
+ <text/>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2024092500</text>
</stackversion>
@@ -58,7 +57,7 @@ ta:A*%e^(l1*t)+B*%e^(l2*t);</text>
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans1</name>
<type>algebraic</type>
@@ -66,16 +65,16 @@ ta:A*%e^(l1*t)+B*%e^(l2*t);</text>
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>1</requirelowestterms>
<checkanswertype>1</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>1</showvalidation>
- <options></options>
+ <options/>
</input>
<prt>
<name>Result</name>
@@ -104,19 +103,19 @@ m:float(m);</text>
<answertest>AlgEquiv</answertest>
<sans>p</sans>
<tans>0</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>1</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
@@ -129,19 +128,19 @@ m:float(m);</text>
<answertest>AlgEquiv</answertest>
<sans>lv</sans>
<tans>2</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>2</truenextnode>
<trueanswernote>prt1-2-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0.75</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-2-F</falseanswernote>
<falsefeedback format="html">
@@ -154,11 +153,11 @@ m:float(m);</text>
<answertest>AlgEquiv</answertest>
<sans>numberp(m)</sans>
<tans>true</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-3-T</trueanswernote>
<truefeedback format="html">
@@ -166,11 +165,11 @@ m:float(m);</text>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>1</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-3-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -186,7 +185,7 @@ m:float(m);</text>
<deployedseed>511077327</deployedseed>
<qtest>
<testcase>1</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>ta</value>
@@ -200,7 +199,7 @@ m:float(m);</text>
</qtest>
<qtest>
<testcase>2</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>%e^(l1*t)+%e^(l2*t)</value>
@@ -214,7 +213,7 @@ m:float(m);</text>
</qtest>
<qtest>
<testcase>3</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>sin(t)</value>
@@ -228,7 +227,7 @@ m:float(m);</text>
</qtest>
<qtest>
<testcase>4</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>A*B*%e^(l1*t)</value>
@@ -242,7 +241,7 @@ m:float(m);</text>
</qtest>
<qtest>
<testcase>5</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>D*%e^(l1*t)+C*%e^(l2*t);</value>
@@ -255,5 +254,4 @@ m:float(m);</text>
</expected>
</qtest>
</question>
-
-</quiz>
\ No newline at end of file
+</quiz>
diff --git a/samplequestions/stacklibrary/Topics/Parsons-proof-template.xml b/samplequestions/stacklibrary/Topics/Parsons-proof-template.xml
index 61b1c56f8bb1475470d5dd474f9a5a089dab8bc9..5e1969761b0ba603de770896624313711053ce90 100644
--- a/samplequestions/stacklibrary/Topics/Parsons-proof-template.xml
+++ b/samplequestions/stacklibrary/Topics/Parsons-proof-template.xml
@@ -1,66 +1,65 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 4482 -->
<question type="stack">
<name>
<text>Parsons' proof template</text>
</name>
<questiontext format="html">
- <text><![CDATA[<p>{@thm@}</p>
-[[parsons input="ans1"]]
-{# parsons_encode(proof_steps) #}
-[[/parsons ]]
+ <text><![CDATA[<p>{@thm@}</p>
+[[parsons input="ans1"]]
+{# parsons_encode(proof_steps) #}
+[[/parsons ]]
<p>[[input:ans1]] [[validation:ans1]]</p>]]></text>
</questiontext>
<generalfeedback format="html">
- <text><![CDATA[[[comment]]
-This parsons' input will automatically feedback a model solution (the "teacher's answer") unless the input option 'hideanswer' is used or the PRT is on quiet respectively.
-Below are examples of how to format the worked solutions using the proof_display functions.
-[[/comment]]
-
-[[if test='len1=2' ]]
-Notice this proof has sub-proofs, which can occur in any order. Therefore, we have multiple correct versions of this proof. For example:
-<table><tr>
-<td><div class="proof">{@proof_display_para(tal[1], proof_steps)@}
-<td><div class="proof">{@proof_display_para(tal[2], proof_steps)@}
-</tr></table>
-Can you see the differences between these proofs?
-[[/if]]
-[[if test='len1>2' ]]
-{@proof_display_para(tal[1], proof_steps)@}
-[[/if]]
-[[if test='len1<2' ]]
-{@proof_display_para(tal[1], proof_steps)@}
+ <text><![CDATA[[[comment]]
+This parsons' input will automatically feedback a model solution (the "teacher's answer") unless the input option 'hideanswer' is used or the PRT is on quiet respectively.
+Below are examples of how to format the worked solutions using the proof_display functions.
+[[/comment]]
+
+[[if test='len1=2' ]]
+Notice this proof has sub-proofs, which can occur in any order. Therefore, we have multiple correct versions of this proof. For example:
+<table><tr>
+<td><div class="proof">{@proof_display_para(tal[1], proof_steps)@}
+<td><div class="proof">{@proof_display_para(tal[2], proof_steps)@}
+</tr></table>
+Can you see the differences between these proofs?
+[[/if]]
+[[if test='len1>2' ]]
+{@proof_display_para(tal[1], proof_steps)@}
+[[/if]]
+[[if test='len1<2' ]]
+{@proof_display_para(tal[1], proof_steps)@}
[[/if]]]]></text>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2024092500</text>
</stackversion>
<questionvariables>
- <text><![CDATA[stack_include_contrib("prooflib.mac");
-
-/* STACK is distributed with a number of pre-written proofs. See
- https://github.com/maths/moodle-qtype_stack/tree/master/stack/maxima/contrib/proofsamples
-*/
-/* Load proof here, change `inf-primes.mac` for your chosen proof. */
-stack_include_contrib("proofsamples/inf-primes.mac");
-/*stack_include_contrib("proofsamples/harmonic-series.mac");*/
-
-/* The variable "proof_steps", etc., are defined in the above file. Permute the steps randomly. */
-proof_steps: random_permutation(proof_steps);
-
-/* Generate the alternative proofs. */
-tal: proof_alternatives(proof_ans);
-len1: length(tal)
-/* Below is one "wrong" answer generated by sorting the correct answer keys. */
-wa1:apply(proof,sort(args(proof_flatten(tal[1]))));
-
-
-/* Create a set of flattened proofs. */
+ <text><![CDATA[stack_include_contrib("prooflib.mac");
+
+/* STACK is distributed with a number of pre-written proofs. See
+ https://github.com/maths/moodle-qtype_stack/tree/master/stack/maxima/contrib/proofsamples
+*/
+/* Load proof here, change `inf-primes.mac` for your chosen proof. */
+stack_include_contrib("proofsamples/inf-primes.mac");
+/*stack_include_contrib("proofsamples/harmonic-series.mac");*/
+
+/* The variable "proof_steps", etc., are defined in the above file. Permute the steps randomly. */
+proof_steps: random_permutation(proof_steps);
+
+/* Generate the alternative proofs. */
+tal: proof_alternatives(proof_ans);
+len1: length(tal)
+/* Below is one "wrong" answer generated by sorting the correct answer keys. */
+wa1:apply(proof,sort(args(proof_flatten(tal[1]))));
+
+
+/* Create a set of flattened proofs. */
tas: setify(map(proof_flatten, tal));]]></text>
</questionvariables>
<specificfeedback format="html">
@@ -70,9 +69,9 @@ tas: setify(map(proof_flatten, tal));]]></text>
<text>{@ map(first, proof_steps) @}</text>
</questionnote>
<questiondescription format="html">
- <text>This question is a template for importing proofs from the STACK contrib directory. See
-https://github.com/maths/moodle-qtype_stack/tree/master/stack/maxima/contrib/proofsamples
-
+ <text>This question is a template for importing proofs from the STACK contrib directory. See
+https://github.com/maths/moodle-qtype_stack/tree/master/stack/maxima/contrib/proofsamples
+
It also demonstrates how to create sample Parsons problems. In particular, how to use the Parsons function to give tailored feedback about what stages are incorrect.</text>
</questiondescription>
<questionsimplify>1</questionsimplify>
@@ -95,7 +94,7 @@ It also demonstrates how to create sample Parsons problems. In particular, how
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans1</name>
<type>parsons</type>
@@ -103,16 +102,16 @@ It also demonstrates how to create sample Parsons problems. In particular, how
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<prt>
<name>prt1</name>
@@ -120,28 +119,28 @@ It also demonstrates how to create sample Parsons problems. In particular, how
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text>sa: parsons_decode(ans1);
+ <text>sa: parsons_decode(ans1);
[pd, saa]:proof_assessment(sa, proof_alternatives(proof_ans));</text>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>pd</sans>
<tans>0</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
@@ -184,5 +183,4 @@ It also demonstrates how to create sample Parsons problems. In particular, how
</expected>
</qtest>
</question>
-
-</quiz>
\ No newline at end of file
+</quiz>
diff --git a/samplequestions/stacklibrary/Topics/Proof/Proof_comprehension_infinite_primes.xml b/samplequestions/stacklibrary/Topics/Proof/Proof_comprehension_infinite_primes.xml
index c6d81d08e6781b45e7fce2ecf82d47fb0c02fb2c..dccd28a14f9256e1bb0e688ba2cc81ef5fb177ae 100755
--- a/samplequestions/stacklibrary/Topics/Proof/Proof_comprehension_infinite_primes.xml
+++ b/samplequestions/stacklibrary/Topics/Proof/Proof_comprehension_infinite_primes.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 2551 -->
<question type="stack">
<name>
<text>W6 Q6 PC (Infinitely many primes)</text>
@@ -14,7 +13,7 @@
<tr><td>1.</td><td nowrap>Suppose there are only finitely many primes, label them \(p_1 = 2 < p_2 = 3 < \cdots < p_n\).</td></tr>
<tr><td>2.</td><td nowrap>Let \(N = p_1p_2\cdots p_n +1\).</td></tr>
<tr><td>3.</td><td nowrap>Then \(N\) is an integer greater than each of \(p_1, \dots, p_n\), thus \(N\) cannot be prime. </td></tr>
-<tr><td>4.</td><td nowrap>Thus we can write \(N\) as a product of primes. /* say \(N = q_1q_2 \cdots q_m\) where \(q_1, \dots, q_m\) are prime. */</td></tr>
+<tr><td>4.</td><td nowrap>Thus we can write \(N\) as a product of primes.</td></tr>
<tr><td>5.</td><td nowrap>Hence there is some prime \(p\) which divides \(N\). </td></tr>
<tr><td>6.</td><td nowrap>\(p\) can not be any of the \(p_1, \dots p_n\) otherwise \(p\) would divide the difference \(N - p_1 p_2 \cdots p_n = \) [[validation:ans0]] [[input:ans0]] which cannot happen.</td><td>[[feedback:prt0]]</td></tr>
<tr><td>7.</td><td nowrap>Thus \(p\) must be a new prime and our initial list \(p_1,p_2,\dots, p_n\) is not an exhaustive list of the primes. </td></tr>
@@ -42,9 +41,9 @@ The aim of the proof is to show a contradiction to line 1, which is accomplished
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
- <text>2021120900</text>
+ <text>2024111900</text>
</stackversion>
<questionvariables>
<text><![CDATA[tacp:[[A, false, "A. Direct proof"], [B, false, "B. Definition-chasing"], [C, false, "C. If and only if"], [D, false, "D. Exhaustive cases"], [E, false, "E. Induction"], [F, false, "F. Contrapositive"], [G, true, "G. Contradiction"]];
@@ -55,13 +54,13 @@ ta2:1;
ta3:matrix([1,7]);]]></text>
</questionvariables>
<specificfeedback format="html">
- <text></text>
+ <text/>
</specificfeedback>
<questionnote format="moodle_auto_format">
- <text></text>
+ <text/>
</questionnote>
<questiondescription format="moodle_auto_format">
- <text></text>
+ <text/>
</questiondescription>
<questionsimplify>1</questionsimplify>
<assumepositive>0</assumepositive>
@@ -83,7 +82,7 @@ ta3:matrix([1,7]);]]></text>
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans0</name>
<type>algebraic</type>
@@ -91,16 +90,16 @@ ta3:matrix([1,7]);]]></text>
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>5</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans1</name>
@@ -109,16 +108,16 @@ ta3:matrix([1,7]);]]></text>
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>1</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans2</name>
@@ -127,16 +126,16 @@ ta3:matrix([1,7]);]]></text>
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>1</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans3</name>
@@ -145,16 +144,16 @@ ta3:matrix([1,7]);]]></text>
<boxsize>3</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>2</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans4</name>
@@ -163,16 +162,16 @@ ta3:matrix([1,7]);]]></text>
<boxsize>50</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>1</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ansp</name>
@@ -181,16 +180,16 @@ ta3:matrix([1,7]);]]></text>
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<prt>
<name>prt0</name>
@@ -198,31 +197,31 @@ ta3:matrix([1,7]);]]></text>
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans0</sans>
<tans>ta0</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
- <truescore>1.0000000</truescore>
- <truepenalty></truepenalty>
+ <truescore>1</truescore>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt0-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
- <falsescore>0.0000000</falsescore>
- <falsepenalty></falsepenalty>
+ <falsescore>0</falsescore>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt0-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -232,31 +231,31 @@ ta3:matrix([1,7]);]]></text>
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans1</sans>
<tans>ta1</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
- <truescore>1.0000000</truescore>
- <truepenalty></truepenalty>
+ <truescore>1</truescore>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
- <falsescore>0.0000000</falsescore>
- <falsepenalty></falsepenalty>
+ <falsescore>0</falsescore>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -266,31 +265,31 @@ ta3:matrix([1,7]);]]></text>
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans2</sans>
<tans>ta2</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
- <truescore>1.0000000</truescore>
- <truepenalty></truepenalty>
+ <truescore>1</truescore>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt2-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
- <falsescore>0.0000000</falsescore>
- <falsepenalty></falsepenalty>
+ <falsescore>0</falsescore>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt2-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -304,27 +303,27 @@ ta3:matrix([1,7]);]]></text>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>Sets</answertest>
<sans>sa</sans>
<tans>setify(args(ta3))</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
- <truescore>1.0000000</truescore>
- <truepenalty></truepenalty>
+ <truescore>1</truescore>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt3-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
- <falsescore>0.0000000</falsescore>
- <falsepenalty></falsepenalty>
+ <falsescore>0</falsescore>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt3-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -334,37 +333,37 @@ ta3:matrix([1,7]);]]></text>
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ansp</sans>
<tans>taa</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
- <truescore>1.0000000</truescore>
- <truepenalty></truepenalty>
+ <truescore>1</truescore>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prtp-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
- <falsescore>0.0000000</falsescore>
- <falsepenalty></falsepenalty>
+ <falsescore>0</falsescore>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prtp-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
<qtest>
<testcase>1</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans0</name>
<value>ta0</value>
@@ -383,7 +382,7 @@ ta3:matrix([1,7]);]]></text>
</testinput>
<testinput>
<name>ans4</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ansp</name>
@@ -422,7 +421,7 @@ ta3:matrix([1,7]);]]></text>
</qtest>
<qtest>
<testcase>2</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans0</name>
<value>ta0-1</value>
@@ -441,7 +440,7 @@ ta3:matrix([1,7]);]]></text>
</testinput>
<testinput>
<name>ans4</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ansp</name>
@@ -480,7 +479,7 @@ ta3:matrix([1,7]);]]></text>
</qtest>
<qtest>
<testcase>3</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans0</name>
<value>ta0</value>
@@ -499,7 +498,7 @@ ta3:matrix([1,7]);]]></text>
</testinput>
<testinput>
<name>ans4</name>
- <value></value>
+ <value/>
</testinput>
<testinput>
<name>ansp</name>
@@ -537,5 +536,4 @@ ta3:matrix([1,7]);]]></text>
</expected>
</qtest>
</question>
-
-</quiz>
\ No newline at end of file
+</quiz>
diff --git a/samplequestions/stacklibrary/Topics/Proof/Proof_comprehension_roots_unity.xml b/samplequestions/stacklibrary/Topics/Proof/Proof_comprehension_roots_unity.xml
index 59766eb276ee4f12e269938335faebc1144b1188..3d2e718ef196abb9207e7f6d4a28a2d844ebb7ab 100755
--- a/samplequestions/stacklibrary/Topics/Proof/Proof_comprehension_roots_unity.xml
+++ b/samplequestions/stacklibrary/Topics/Proof/Proof_comprehension_roots_unity.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 2515 -->
<question type="stack">
<name>
<text>W5 Q9 PC (Roots of unity)</text>
@@ -62,7 +61,7 @@ Steps 1. to 5. show the forwards direction and steps 6. to 8. show the backwards
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2020020300</text>
</stackversion>
@@ -79,13 +78,13 @@ tal4: [[A, false, "A. The proof is a proof by contradiction."], [B, false, "B. T
ta4:mcq_correct(tal4);]]></text>
</questionvariables>
<specificfeedback format="html">
- <text></text>
+ <text/>
</specificfeedback>
<questionnote format="moodle_auto_format">
- <text></text>
+ <text/>
</questionnote>
<questiondescription format="moodle_auto_format">
- <text></text>
+ <text/>
</questiondescription>
<questionsimplify>1</questionsimplify>
<assumepositive>0</assumepositive>
@@ -107,7 +106,7 @@ ta4:mcq_correct(tal4);]]></text>
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans1</name>
<type>algebraic</type>
@@ -115,16 +114,16 @@ ta4:mcq_correct(tal4);]]></text>
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>1</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans2</name>
@@ -133,16 +132,16 @@ ta4:mcq_correct(tal4);]]></text>
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>1</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans3</name>
@@ -151,16 +150,16 @@ ta4:mcq_correct(tal4);]]></text>
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>1</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans4</name>
@@ -169,16 +168,16 @@ ta4:mcq_correct(tal4);]]></text>
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>1</showvalidation>
- <options></options>
+ <options/>
</input>
<prt>
<name>prt1</name>
@@ -186,31 +185,31 @@ ta4:mcq_correct(tal4);]]></text>
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans1</sans>
<tans>ta1</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1.0000000</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0.0000000</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -220,31 +219,31 @@ ta4:mcq_correct(tal4);]]></text>
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans2</sans>
<tans>ta2</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1.0000000</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt2-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0.0000000</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt2-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -254,31 +253,31 @@ ta4:mcq_correct(tal4);]]></text>
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans3</sans>
<tans>ta3</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1.0000000</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt3-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0.0000000</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt3-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -288,37 +287,37 @@ ta4:mcq_correct(tal4);]]></text>
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans4</sans>
<tans>ta4</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1.0000000</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt4-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0.0000000</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt4-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
<qtest>
<testcase>1</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>ta1</value>
@@ -362,7 +361,7 @@ ta4:mcq_correct(tal4);]]></text>
</qtest>
<qtest>
<testcase>2</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>r^n*e^(n*i*theta)</value>
@@ -405,5 +404,4 @@ ta4:mcq_correct(tal4);]]></text>
</expected>
</qtest>
</question>
-
-</quiz>
\ No newline at end of file
+</quiz>
diff --git a/samplequestions/stacklibrary/Topics/Proof/Proof_gaps_induction_series.xml b/samplequestions/stacklibrary/Topics/Proof/Proof_gaps_induction_series.xml
index e4871737a8c5b67aec1f426499930c71209fb250..627db29c4e3ac6758234a95c97e03d395fa1e31b 100755
--- a/samplequestions/stacklibrary/Topics/Proof/Proof_gaps_induction_series.xml
+++ b/samplequestions/stacklibrary/Topics/Proof/Proof_gaps_induction_series.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 2439 -->
<question type="stack">
<name>
<text>Q02 Q8 Proof by induction (general) sum (2k-1)^3 = n^2(2n^2-1)</text>
@@ -63,7 +62,7 @@ At this point the goal is to algebraically manipulate your expression so that yo
<defaultgrade>5</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2023010400</text>
</stackversion>
@@ -85,13 +84,13 @@ ta4:[[A, false, "(algebraic simplification)"], [B, true, "(by the induction hypo
ta5:rh1;]]></text>
</questionvariables>
<specificfeedback format="html">
- <text></text>
+ <text/>
</specificfeedback>
<questionnote format="moodle_auto_format">
<text>{@pn@}</text>
</questionnote>
<questiondescription format="moodle_auto_format">
- <text></text>
+ <text/>
</questiondescription>
<questionsimplify>0</questionsimplify>
<assumepositive>0</assumepositive>
@@ -113,7 +112,7 @@ ta5:rh1;]]></text>
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans1</name>
<type>numerical</type>
@@ -121,16 +120,16 @@ ta5:rh1;]]></text>
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans2</name>
@@ -139,16 +138,16 @@ ta5:rh1;]]></text>
<boxsize>5</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans3</name>
@@ -159,14 +158,14 @@ ta5:rh1;]]></text>
<insertstars>4</insertstars>
<syntaxhint>sum(?,k,1,n)+?</syntaxhint>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans4</name>
@@ -175,16 +174,16 @@ ta5:rh1;]]></text>
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>0</mustverify>
<showvalidation>0</showvalidation>
- <options></options>
+ <options/>
</input>
<input>
<name>ans5</name>
@@ -193,16 +192,16 @@ ta5:rh1;]]></text>
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>4</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>3</showvalidation>
- <options></options>
+ <options/>
</input>
<prt>
<name>prtbase</name>
@@ -210,44 +209,44 @@ ta5:rh1;]]></text>
<autosimplify>1</autosimplify>
<feedbackstyle>2</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>EqualComAss</answertest>
<sans>ans1</sans>
<tans>ta1</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>0.5</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>2</truenextnode>
<trueanswernote>prtbase-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>1</falsenextnode>
<falseanswernote>prtbase-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans1</sans>
<tans>ta1</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>+</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>2</truenextnode>
<trueanswernote>prtbase-2-T</trueanswernote>
<truefeedback format="html">
@@ -255,49 +254,49 @@ ta5:rh1;]]></text>
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<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>2</falsenextnode>
<falseanswernote>prtbase-2-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>2</name>
- <description></description>
+ <description/>
<answertest>EqualComAss</answertest>
<sans>ans2</sans>
<tans>ta2</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>+</truescoremode>
<truescore>0.5</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prtbase-3-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>3</falsenextnode>
<falseanswernote>prtbase-3-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>3</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans2</sans>
<tans>ta2</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>+</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prtbase-4-T</trueanswernote>
<truefeedback format="html">
@@ -305,11 +304,11 @@ ta5:rh1;]]></text>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prtbase-4-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -319,28 +318,27 @@ ta5:rh1;]]></text>
<autosimplify>0</autosimplify>
<feedbackstyle>2</feedbackstyle>
<feedbackvariables>
- <text>A3:if atom(ans3) then {} else setify(args(ans3));
-</text>
+ <text>A3:if atom(ans3) then {} else setify(args(ans3));</text>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>elementp('sum(ak,k,1,n),A3)</sans>
<tans>true</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>0.5</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>1</truenextnode>
<trueanswernote>prtind-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>1</falsenextnode>
<falseanswernote>prtind-1-F</falseanswernote>
<falsefeedback format="html">
@@ -349,40 +347,40 @@ ta5:rh1;]]></text>
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>EqualComAss</answertest>
<sans>ans3</sans>
<tans>ta3</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prtind-2-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>2</falsenextnode>
<falseanswernote>prtind-2-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>2</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans3</sans>
<tans>ta3</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prtind-3-T</trueanswernote>
<truefeedback format="html">
@@ -390,11 +388,11 @@ ta5:rh1;]]></text>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prtind-3-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -404,27 +402,27 @@ ta5:rh1;]]></text>
<autosimplify>0</autosimplify>
<feedbackstyle>2</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans5</sans>
<tans>ta5</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prtind2-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prtind2-1-F</falseanswernote>
<falsefeedback format="html">
@@ -438,37 +436,37 @@ ta5:rh1;]]></text>
<autosimplify>1</autosimplify>
<feedbackstyle>3</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans4</sans>
<tans>B</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prtindjustify-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prtindjustify-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
<qtest>
<testcase>1</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>ta1</value>
@@ -518,5 +516,4 @@ ta5:rh1;]]></text>
<text>Incorrect answer.</text>
</hint>
</question>
-
-</quiz>
\ No newline at end of file
+</quiz>
diff --git a/samplequestions/stacklibrary/Topics/Topics_units_basic.xml b/samplequestions/stacklibrary/Topics/Topics_units_basic.xml
index 51a2eaa031c263c79603f557bb2b4845c2b160ac..ac59c3892aff5cf0aca313fad2374b017520bc28 100644
--- a/samplequestions/stacklibrary/Topics/Topics_units_basic.xml
+++ b/samplequestions/stacklibrary/Topics/Topics_units_basic.xml
@@ -1,57 +1,55 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 4503 -->
<question type="stack">
<name>
<text>Scientific units template</text>
</name>
<questiontext format="moodle_auto_format">
- <text><![CDATA[<p>You run {@d@} in {@t@}. What is your average speed?</p>
-<p>[[input:ans1]] [[validation:ans1]]</p>
+ <text><![CDATA[<p>You run {@d@} in {@t@}. What is your average speed?</p>
+<p>[[input:ans1]] [[validation:ans1]]</p>
<p>Please give your answer to \(4\) significant figures.</p>]]></text>
</questiontext>
<generalfeedback format="moodle_auto_format">
- <text></text>
+ <text/>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2024092500</text>
</stackversion>
<questionvariables>
- <text><![CDATA[/* This loads scientific units. */
-stack_unit_si_declare(true);
-
-/* We have an inert function to represent dimensional quantities. */
-d:stackunits(100.0, m);
-t:stackunits(9.59,s);
-/* We can't use d/t directly, because we can't calculate with units. */
-/* Instead, we turn the intert function into a product, then re-make the result. */
-ta1:stackunits_make(ev(d/t,stackunits="*"));
-
-/* Note the above is a raw calculation, but does not give a teacher's answer with the
- correct number of significant figures. */
-ta:stackunits(dispsf(stack_units_nums(ta1), 4), stack_units_units(ta1));
-
-/* Uses compatible units. (Just an example) */
-ta2:stackunits(dispsf(stack_units_nums(ta1/1000), 4), km/m*stack_units_units(ta1));
-]]></text>
+ <text><![CDATA[/* This loads scientific units. */
+stack_unit_si_declare(true);
+
+/* We have an inert function to represent dimensional quantities. */
+d:stackunits(100.0, m);
+t:stackunits(9.59,s);
+/* We can't use d/t directly, because we can't calculate with units. */
+/* Instead, we turn the intert function into a product, then re-make the result. */
+ta1:stackunits_make(ev(d/t,stackunits="*"));
+
+/* Note the above is a raw calculation, but does not give a teacher's answer with the
+ correct number of significant figures. */
+ta:stackunits(dispsf(stack_units_nums(ta1), 4), stack_units_units(ta1));
+
+/* Uses compatible units. (Just an example) */
+ta2:stackunits(dispsf(stack_units_nums(ta1/1000), 4), km/m*stack_units_units(ta1));]]></text>
</questionvariables>
<specificfeedback format="html">
<text>[[feedback:prt1]]</text>
</specificfeedback>
<questionnote format="html">
- <text></text>
+ <text/>
</questionnote>
<questiondescription format="markdown">
- <text><![CDATA[This is a sample question using basic scientific units.
-
-1. Note the calculations with units in the question variables.
-2. This uses the "units" inputs, with some options.
-3. The PRT uses a numerical units answer test.
-
+ <text><![CDATA[This is a sample question using basic scientific units.
+
+1. Note the calculations with units in the question variables.
+2. This uses the "units" inputs, with some options.
+3. The PRT uses a numerical units answer test.
+
Note some of the feedback in the question tests.]]></text>
</questiondescription>
<questionsimplify>1</questionsimplify>
@@ -74,7 +72,7 @@ Note some of the feedback in the question tests.]]></text>
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans1</name>
<type>units</type>
@@ -82,10 +80,10 @@ Note some of the feedback in the question tests.]]></text>
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>0</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
@@ -99,7 +97,7 @@ Note some of the feedback in the question tests.]]></text>
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
@@ -111,19 +109,19 @@ Note some of the feedback in the question tests.]]></text>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -150,8 +148,8 @@ Note some of the feedback in the question tests.]]></text>
</testinput>
<expected>
<name>prt1</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
</qtest>
@@ -164,14 +162,14 @@ Note some of the feedback in the question tests.]]></text>
</testinput>
<expected>
<name>prt1</name>
- <expectedscore></expectedscore>
- <expectedpenalty></expectedpenalty>
+ <expectedscore/>
+ <expectedpenalty/>
<expectedanswernote>NULL</expectedanswernote>
</expected>
</qtest>
<qtest>
<testcase>4</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>ta2</value>
@@ -184,5 +182,4 @@ Note some of the feedback in the question tests.]]></text>
</expected>
</qtest>
</question>
-
-</quiz>
\ No newline at end of file
+</quiz>
diff --git a/samplequestions/stacklibrary/Topics/Vector-Calculus.xml b/samplequestions/stacklibrary/Topics/Vector-Calculus.xml
index ad5639964e7cdc5b592daea1ea19083194f314c7..044eb8f56ff7f5bb05f46ba49ca0499bd9eea652 100644
--- a/samplequestions/stacklibrary/Topics/Vector-Calculus.xml
+++ b/samplequestions/stacklibrary/Topics/Vector-Calculus.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 12694 -->
<question type="stack">
<name>
<text>Vector Calculus</text>
@@ -39,7 +38,7 @@ f & g & h
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2024092500</text>
</stackversion>
@@ -66,7 +65,7 @@ ta3: curl(f,vars);
ta4: EMPTYANSWER;]]></text>
</questionvariables>
<specificfeedback format="html">
- <text></text>
+ <text/>
</specificfeedback>
<questionnote format="html">
<text>\[ \mathbf{F}(x,y,z) = {@f@}\] \[ \mathbf{\nabla} \cdot \mathbf{F} = {@ta2@}\] \[ \mathbf{\nabla} \times \mathbf{F} ={@ta3@}\]</text>
@@ -94,7 +93,7 @@ ta4: EMPTYANSWER;]]></text>
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans1</name>
<type>matrix</type>
@@ -102,10 +101,10 @@ ta4: EMPTYANSWER;]]></text>
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
@@ -120,10 +119,10 @@ ta4: EMPTYANSWER;]]></text>
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
@@ -138,10 +137,10 @@ ta4: EMPTYANSWER;]]></text>
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
@@ -156,10 +155,10 @@ ta4: EMPTYANSWER;]]></text>
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
@@ -173,19 +172,19 @@ ta4: EMPTYANSWER;]]></text>
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans2</sans>
<tans>ta2</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>1</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
@@ -193,11 +192,11 @@ ta4: EMPTYANSWER;]]></text>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>1</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
@@ -206,19 +205,19 @@ ta4: EMPTYANSWER;]]></text>
<answertest>AlgEquiv</answertest>
<sans>ans1</sans>
<tans>matrix([null],[null],[null])</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>+</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-2-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-2-F</falseanswernote>
<falsefeedback format="html">
@@ -232,19 +231,19 @@ ta4: EMPTYANSWER;]]></text>
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans3</sans>
<tans>ta3</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>1</truenextnode>
<trueanswernote>prt2-1-T</trueanswernote>
<truefeedback format="html">
@@ -252,32 +251,32 @@ ta4: EMPTYANSWER;]]></text>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>1</falsenextnode>
<falseanswernote>prt2-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans4</sans>
<tans>EMPTYANSWER</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>1</quiet>
<truescoremode>+</truescoremode>
<truescore>0</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt2-2-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt2-2-F</falseanswernote>
<falsefeedback format="html">
@@ -318,15 +317,14 @@ ta4: EMPTYANSWER;]]></text>
<name>prt1</name>
<expectedscore>1.0000000</expectedscore>
<expectedpenalty>0.0000000</expectedpenalty>
- <expectedanswernote>prt1-1-T</expectedanswernote>
+ <expectedanswernote>prt1-2-T</expectedanswernote>
</expected>
<expected>
<name>prt2</name>
<expectedscore>1.0000000</expectedscore>
<expectedpenalty>0.0000000</expectedpenalty>
- <expectedanswernote>prt2-1-T</expectedanswernote>
+ <expectedanswernote>prt2-2-T</expectedanswernote>
</expected>
</qtest>
</question>
-
-</quiz>
\ No newline at end of file
+</quiz>
diff --git a/samplequestions/stacklibrary/Topics/equivalence_reasoning_example.xml b/samplequestions/stacklibrary/Topics/equivalence_reasoning_example.xml
index dc913d7d37addb5729b4055389fcb61cf42186d5..523e3357545747a88e2794bab05f33fe13eade17 100644
--- a/samplequestions/stacklibrary/Topics/equivalence_reasoning_example.xml
+++ b/samplequestions/stacklibrary/Topics/equivalence_reasoning_example.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 702 -->
<question type="stack">
<name>
<text>stack_equiv_find_step(ex, ex1) example</text>
@@ -10,12 +9,12 @@
<p>[[input:ans1]] [[validation:ans1]]</p>]]></text>
</questiontext>
<generalfeedback format="html">
- <text></text>
+ <text/>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2018120500</text>
</stackversion>
@@ -25,9 +24,12 @@
<specificfeedback format="html">
<text>[[feedback:prt1]]</text>
</specificfeedback>
- <questionnote>
+ <questionnote format="html">
<text>{@ta@}</text>
</questionnote>
+ <questiondescription format="html">
+ <text/>
+ </questiondescription>
<questionsimplify>0</questionsimplify>
<assumepositive>0</assumepositive>
<assumereal>1</assumereal>
@@ -41,12 +43,14 @@
<text><![CDATA[<span style="font-size: 1.5em; color:red;"><i class="fa fa-times"></i></span> Incorrect answer.]]></text>
</prtincorrect>
<decimals>.</decimals>
+ <scientificnotation>*10</scientificnotation>
<multiplicationsign>cross</multiplicationsign>
<sqrtsign>1</sqrtsign>
<complexno>i</complexno>
<inversetrig>cos-1</inversetrig>
+ <logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans1</name>
<type>equiv</type>
@@ -56,64 +60,67 @@
<insertstars>0</insertstars>
<syntaxhint>firstline</syntaxhint>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>2</showvalidation>
- <options></options>
+ <options/>
</input>
<prt>
<name>prt1</name>
<value>1.0000000</value>
<autosimplify>0</autosimplify>
+ <feedbackstyle>1</feedbackstyle>
<feedbackvariables>
<text>w1:stack_equiv_find_step(lg(5^2,5), ans1)</text>
</feedbackvariables>
<node>
<name>0</name>
+ <description/>
<answertest>EquivFirst</answertest>
<sans>ans1</sans>
<tans>ta</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>0.5000000</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>1</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0.0000000</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>1</name>
+ <description/>
<answertest>EqualComAss</answertest>
<sans>last(ans1)</sans>
<tans>last(ta)</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>+</truescoremode>
<truescore>0.5000000</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>2</truenextnode>
<trueanswernote>prt1-2-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0.0000000</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-2-F</falseanswernote>
<falsefeedback format="html">
@@ -122,14 +129,15 @@
</node>
<node>
<name>2</name>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>emptyp(w1)</sans>
<tans>true</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>+</truescoremode>
<truescore>0.0000000</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-3-T</trueanswernote>
<truefeedback format="html">
@@ -137,16 +145,17 @@
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0.0000000</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-3-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
<qtest>
<testcase>1</testcase>
+ <description/>
<testinput>
<name>ans1</name>
<value>ta</value>
@@ -160,6 +169,7 @@
</qtest>
<qtest>
<testcase>2</testcase>
+ <description/>
<testinput>
<name>ans1</name>
<value>[lg(25,5),stackeq(lg(5^2,5)),stackeq(2*lg(5,5)),stackeq(2*1)]</value>
@@ -173,6 +183,7 @@
</qtest>
<qtest>
<testcase>3</testcase>
+ <description/>
<testinput>
<name>ans1</name>
<value>[lg(25,5),stackeq(2)]</value>
@@ -185,5 +196,4 @@
</expected>
</qtest>
</question>
-
-</quiz>
\ No newline at end of file
+</quiz>
diff --git a/samplequestions/stacklibrary/Topics/plot-Discrete_mathematics_graph_theory-1.xml b/samplequestions/stacklibrary/Topics/plot-Discrete_mathematics_graph_theory-1.xml
index a345e374f54faf87bdbf19d2c1be3327e9943c0e..43a283b7e7039263e451f1643b804e49d9fc7bd6 100644
--- a/samplequestions/stacklibrary/Topics/plot-Discrete_mathematics_graph_theory-1.xml
+++ b/samplequestions/stacklibrary/Topics/plot-Discrete_mathematics_graph_theory-1.xml
@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<quiz>
-<!-- question: 12704 -->
<question type="stack">
<name>
<text><![CDATA[Discrete mathematics & graph theory - 1 -plot()]]></text>
@@ -11,12 +10,12 @@
</p><p>[[input:ans1]] [[validation:ans1]]</p>]]></text>
</questiontext>
<generalfeedback format="moodle_auto_format">
- <text></text>
+ <text/>
</generalfeedback>
<defaultgrade>1</defaultgrade>
<penalty>0.1</penalty>
<hidden>0</hidden>
- <idnumber></idnumber>
+ <idnumber/>
<stackversion>
<text>2024092500</text>
</stackversion>
@@ -40,7 +39,7 @@ ta1b: C5</text>
<text>[[feedback:prt1]]</text>
</specificfeedback>
<questionnote format="html">
- <text></text>
+ <text/>
</questionnote>
<questiondescription format="html">
<text>This is a graph theory which illustrates maxima's plot function. This is the question outlined in the `discrete maths and graph theory` page of mathematical topics in the documentation. This can be found on your server at `[YOUR SERVER ADDRESS]/question/type/stack/doc/doc.php/Topics/Discrete_mathematics.md`. More info about `plot()` can be found at `[YOUR SERVER ADDRESS]/question/type/stack/doc/doc.php//Plots/Plots/`, but note that maxima plot function is not actively updated, in favour of JSX graphs support.</text>
@@ -65,7 +64,7 @@ ta1b: C5</text>
<inversetrig>cos-1</inversetrig>
<logicsymbol>lang</logicsymbol>
<matrixparens>[</matrixparens>
- <variantsselectionseed></variantsselectionseed>
+ <variantsselectionseed/>
<input>
<name>ans1</name>
<type>algebraic</type>
@@ -73,16 +72,16 @@ ta1b: C5</text>
<boxsize>15</boxsize>
<strictsyntax>1</strictsyntax>
<insertstars>0</insertstars>
- <syntaxhint></syntaxhint>
+ <syntaxhint/>
<syntaxattribute>0</syntaxattribute>
- <forbidwords></forbidwords>
- <allowwords></allowwords>
+ <forbidwords/>
+ <allowwords/>
<forbidfloat>1</forbidfloat>
<requirelowestterms>0</requirelowestterms>
<checkanswertype>0</checkanswertype>
<mustverify>1</mustverify>
<showvalidation>1</showvalidation>
- <options></options>
+ <options/>
</input>
<prt>
<name>prt1</name>
@@ -90,56 +89,56 @@ ta1b: C5</text>
<autosimplify>1</autosimplify>
<feedbackstyle>1</feedbackstyle>
<feedbackvariables>
- <text></text>
+ <text/>
</feedbackvariables>
<node>
<name>0</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans1</sans>
<tans>ta1</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>=</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-1-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>=</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>1</falsenextnode>
<falseanswernote>prt1-1-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
<node>
<name>1</name>
- <description></description>
+ <description/>
<answertest>AlgEquiv</answertest>
<sans>ans1</sans>
<tans>ta1b</tans>
- <testoptions></testoptions>
+ <testoptions/>
<quiet>0</quiet>
<truescoremode>+</truescoremode>
<truescore>1</truescore>
- <truepenalty></truepenalty>
+ <truepenalty/>
<truenextnode>-1</truenextnode>
<trueanswernote>prt1-2-T</trueanswernote>
<truefeedback format="html">
- <text></text>
+ <text/>
</truefeedback>
<falsescoremode>-</falsescoremode>
<falsescore>0</falsescore>
- <falsepenalty></falsepenalty>
+ <falsepenalty/>
<falsenextnode>-1</falsenextnode>
<falseanswernote>prt1-2-F</falseanswernote>
<falsefeedback format="html">
- <text></text>
+ <text/>
</falsefeedback>
</node>
</prt>
@@ -159,7 +158,7 @@ ta1b: C5</text>
</qtest>
<qtest>
<testcase>2</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>C5</value>
@@ -173,7 +172,7 @@ ta1b: C5</text>
</qtest>
<qtest>
<testcase>3</testcase>
- <description></description>
+ <description/>
<testinput>
<name>ans1</name>
<value>C_6</value>
@@ -186,5 +185,4 @@ ta1b: C5</text>
</expected>
</qtest>
</question>
-
-</quiz>
\ No newline at end of file
+</quiz>