From dd74c5bd529b58f5286edf2e17e63601db768116 Mon Sep 17 00:00:00 2001
From: Chris Sangwin <C.J.Sangwin@ed.ac.uk>
Date: Tue, 19 Nov 2024 15:37:16 +0000
Subject: [PATCH] Update STACK sample materials.
---
.../AlgMap-2-1.xml | 2 +-
.../AlgMap-2-2.xml | 3 +-
.../AlgMap-2-3.xml | 2 +-
.../AlgMap-2-4.xml | 2 +-
.../AlgMap-3-1.xml | 5 +-
.../AlgMap-3-2.xml | 3 +-
.../AlgMap-3-3.xml | 3 +-
.../AlgMap-3-4.xml | 3 +-
.../AlgMap-3-5.xml | 5 +-
.../AlgMap-3-6.xml | 3 +-
.../AlgMap-3-7.xml | 3 +-
.../AlgMap-3-8.xml | 3 +-
.../AlgMap-3-9.xml | 3 +-
.../AlgMap-5-1.xml | 3 +-
.../AlgMap-5-2.xml | 3 +-
.../08-Algebraic-fractions/AlgMap-8-21.xml | 2 +-
.../08-Algebraic-fractions/AlgMap-8-23.xml | 3 +-
.../08-Algebraic-fractions/AlgMap-8-3.xml | 2 +-
.../08-Algebraic-fractions/AlgMap-8-5.xml | 2 +-
.../08-Algebraic-fractions/AlgMap-8-8.xml | 2 +-
.../09-Linear-equations/AlgMap-9-1.xml | 2 +-
.../09-Linear-equations/AlgMap-9-6.xml | 2 +-
.../AlgMap-10-7.xml | 2 +-
.../AlgMap-10-8.xml | 2 +-
.../AlgMap-11-11.xml | 2 +-
.../AlgMap-11-9.xml | 2 +-
.../AlgMap-13-1-.xml | 2 +-
.../AlgMap-13-13.xml | 2 +-
.../AlgMap-13-16.xml | 2 +-
.../AlgMap-13-17.xml | 2 +-
.../AlgMap-13-20.xml | 2 +-
.../AlgMap-13-4.xml | 2 +-
.../AlgMap-13-7.xml | 2 +-
.../AlgMap-13-8.xml | 2 +-
.../AlgMap-14-6.xml | 3 +-
.../15-Quadratic-equations/AlgMap-15-1.xml | 3 +-
.../15-Quadratic-equations/AlgMap-15-3.xml | 3 +-
.../15-Quadratic-equations/AlgMap-15-7.xml | 3 +-
.../CR_Diff_04/CR-Diff-04-product-1-b.xml | 5 +-
.../CR_Diff_04/CR-Diff-04-product-1-c.xml | 5 +-
.../CR_Diff_04/CR-Diff-04-product-1-d.xml | 5 +-
.../CR_Diff_04/CR-Diff-04-product-1-f.xml | 5 +-
.../CR_Diff_04/CR-Diff-04-product-2-e.xml | 5 +-
.../CR_Diff_04/CR-Diff-04-product-2-g.xml | 5 +-
.../CR_Diff_05/CR-Diff-05-quotient-1-a.xml | 5 +-
.../CR_Diff_05/CR-Diff-05-quotient-1-b.xml | 5 +-
.../CR_Diff_05/CR-Diff-05-quotient-1-c.xml | 5 +-
.../CR_Diff_05/CR-Diff-05-quotient-1-d.xml | 5 +-
.../CR_Diff_05/CR-Diff-05-quotient-1-e.xml | 5 +-
.../CR_Diff_05/CR-Diff-05-quotient-2-a.xml | 5 +-
.../CR_Diff_05/CR-Diff-05-quotient-2-b.xml | 5 +-
.../CR_Diff_05/CR-Diff-05-quotient-2-d.xml | 5 +-
.../CR_Diff_05/CR-Diff-05-quotient-2-e.xml | 5 +-
.../CR_Diff_05/CR-Diff-05-quotient-3-a.xml | 5 +-
.../CR_Diff_05/CR-Diff-05-quotient-3-b.xml | 5 +-
.../CR_Diff_05/CR-Diff-05-quotient-3-c.xml | 5 +-
.../CR_Diff_05/CR-Diff-05-quotient-3-d.xml | 5 +-
.../CR_Diff_06/CR-Diff-06-chain-1-a.xml | 5 +-
.../CR_Diff_06/CR-Diff-06-chain-1-b.xml | 5 +-
.../CR_Diff_06/CR-Diff-06-chain-1-c.xml | 5 +-
.../CR_Diff_06/CR-Diff-06-chain-1-d.xml | 5 +-
.../CR_Diff_06/CR-Diff-06-chain-1-f.xml | 5 +-
.../CR_Diff_06/CR-Diff-06-chain-1-h.xml | 5 +-
.../CR_Diff_06/CR-Diff-06-chain-2-a.xml | 5 +-
.../CR_Diff_06/CR-Diff-06-chain-2-b.xml | 5 +-
.../CR_Diff_06/CR-Diff-06-chain-2-d.xml | 5 +-
.../CR_Diff_06/CR-Diff-06-chain-2-e.xml | 5 +-
.../CR_Diff_06/CR-Diff-06-chain-2-f.xml | 5 +-
.../CR_Diff_06/CR-Diff-06-chain-3-a.xml | 5 +-
.../CR_Diff_06/CR-Diff-06-chain-3-b.xml | 5 +-
.../CR_Diff_06/CR-Diff-06-chain-3-c.xml | 5 +-
.../CR_Diff_06/CR-Diff-06-chain-3-d.xml | 5 +-
.../CR_Diff_06/CR-Diff-06-chain-3-e.xml | 5 +-
.../CR_Diff_06/CR-Diff-06-chain-3-f.xml | 5 +-
.../CR_Diff_07/CR-Diff-07-implicit-1-a.xml | 3 +-
.../CR_Diff_07/CR-Diff-07-implicit-1-b.xml | 5 +-
.../CR_Diff_07/CR-Diff-07-implicit-1-c.xml | 3 +-
.../CR_Diff_07/CR-Diff-07-implicit-2-a.xml | 3 +-
.../CR_Diff_07/CR-Diff-07-implicit-2-b.xml | 3 +-
.../CR_Diff_07/CR-Diff-07-implicit-2-e.xml | 5 +-
.../CR-Diff-08-parametrical-1-d.xml | 3 +-
.../CR-Diff-08-parametrical-2-b.xml | 3 +-
.../CR_Diff_09/CR-Diff-09-misc-2-b.xml | 5 +-
.../CR_Diff_09/CR-Diff-09-misc-2-c.xml | 3 +-
.../CR_Diff_09/CR-Diff-09-misc-4-b.xml | 6 +-
.../CR_Diff_09/CR-Diff-09-misc-5-b.xml | 7 +-
.../CR_Int_11/CR-Int-11-linearity-1-b.xml | 5 +-
.../CR_Int_11/CR-Int-11-linearity-1-c.xml | 5 +-
.../CR_Int_11/CR-Int-11-linearity-1-d.xml | 5 +-
.../CR_Int_11/CR-Int-11-linearity-1-e.xml | 5 +-
.../CR_Int_11/CR-Int-11-linearity-1-h.xml | 5 +-
.../CR_Int_11/CR-Int-11-linearity-1-k.xml | 5 +-
.../CR_Int_11/CR-Int-11-linearity-2-a.xml | 5 +-
.../CR_Int_11/CR-Int-11-linearity-2-d.xml | 5 +-
.../CR_Int_11/CR-Int-11-linearity-2-f.xml | 5 +-
.../CR_Int_11/CR-Int-11-linearity-2-l.xml | 5 +-
.../CR_Int_11/CR-Int-11-linearity-3-e.xml | 5 +-
.../CR_Int_11/CR-Int-11-linearity-3-f.xml | 5 +-
.../CR_Int_12/CR-Int-12-definite-1-f.xml | 5 +-
.../CR_Int_12/CR-Int-12-definite-1-g.xml | 5 +-
.../CR_Int_12/CR-Int-12-definite-1-h.xml | 5 +-
.../CR_Int_12/CR-Int-12-definite-3.xml | 5 +-
.../CR_Int_13/CR-Int-13-parts-1-a.xml | 5 +-
.../CR_Int_13/CR-Int-13-parts-1-e.xml | 5 +-
.../CR_Int_13/CR-Int-13-parts-2-a.xml | 5 +-
.../CR_Int_13/CR-Int-13-parts-2-b.xml | 5 +-
.../CR_Int_13/CR-Int-13-parts-2-c.xml | 5 +-
.../CR_Int_13/CR-Int-13-parts-2-d.xml | 5 +-
.../CR_Int_13/CR-Int-13-parts-4-a.xml | 3 +-
.../CR_Int_13/CR-Int-13-parts-5.xml | 5 +-
.../CR_Int_13/CR-Int-13-parts-6.xml | 6 +-
.../CR_Int_13/CR-Int-13-parts-7.xml | 6 +-
.../CR_Int_14/CR-Int-14-substitution-1-b.xml | 5 +-
.../CR_Int_14/CR-Int-14-substitution-1-i.xml | 5 +-
.../CR_Int_14/CR-Int-14-substitution-3-b.xml | 8 +-
.../CR_Int_14/CR-Int-14-substitution-3-c.xml | 6 +-
.../CR_Int_14/CR-Int-14-substitution-3-d.xml | 8 +-
.../CR_Int_14/CR-Int-14-substitution-3-f.xml | 8 +-
.../CR_Int_14/CR-Int-14-substitution-3-g.xml | 8 +-
.../CR_Int_14/CR-Int-14-substitution-5-a.xml | 5 +-
.../CR_Int_14/CR-Int-14-substitution-6-a.xml | 5 +-
.../CR_Int_15/CR-Int-15-partialfrac-1-b.xml | 5 +-
.../CR_Int_15/CR-Int-15-partialfrac-1-e.xml | 5 +-
.../CR_Int_15/CR-Int-15-partialfrac-10.xml | 5 +-
.../CR_Int_15/CR-Int-15-partialfrac-2-a.xml | 6 +-
.../CR_Int_15/CR-Int-15-partialfrac-2-b.xml | 6 +-
.../CR_Int_15/CR-Int-15-partialfrac-3-a.xml | 5 +-
.../CR_Int_15/CR-Int-15-partialfrac-3-b.xml | 5 +-
.../CR_Int_15/CR-Int-15-partialfrac-3-c.xml | 5 +-
.../CR_Int_15/CR-Int-15-partialfrac-4-b.xml | 6 +-
.../CR_Int_15/CR-Int-15-partialfrac-4-c.xml | 6 +-
.../CR_Int_15/CR-Int-15-partialfrac-5.xml | 5 +-
.../CR_Int_15/CR-Int-15-partialfrac-6.xml | 5 +-
.../CR_Int_15/CR-Int-15-partialfrac-7.xml | 5 +-
.../CR_Int_15/CR-Int-15-partialfrac-8.xml | 5 +-
.../CR_Int_15/CR-Int-15-partialfrac-9.xml | 2 +-
.../CR_Int_16/CR-Int-16-trigonometric-1-b.xml | 3 +-
.../CR_Int_16/CR-Int-16-trigonometric-3.xml | 5 +-
.../CR_Int_17/CR-Int-17-misc-03.xml | 5 +-
.../CR_Int_17/CR-Int-17-misc-04.xml | 5 +-
.../CR_Int_17/CR-Int-17-misc-05.xml | 5 +-
.../CR_Int_17/CR-Int-17-misc-06.xml | 5 +-
.../CR_Int_17/CR-Int-17-misc-08.xml | 5 +-
.../CR_Int_17/CR-Int-17-misc-09.xml | 6 +-
.../CR_Int_17/CR-Int-17-misc-10.xml | 5 +-
.../CR_Int_17/CR-Int-17-misc-12.xml | 3 +-
.../CR_Int_17/CR-Int-17-misc-13.xml | 5 +-
.../CR_Int_17/CR-Int-17-misc-14.xml | 5 +-
.../Doc-Examples/D-L-distance.xml | 40 +-
.../Doc-Examples/Drag_and_drop-1-grouping.xml | 32 +-
.../Doc-Examples/Drag_and_drop-2-Grid.xml | 32 +-
.../Drag_and_drop-3-Grid_with_index.xml | 30 +-
.../Drag_and_drop-4-Using-images.xml | 34 +-
.../stacklibrary/Doc-Examples/GeoGebra.xml | 38 +-
.../Doc-Examples/Parsons-1-minimal.xml | 31 +-
.../Parsons-2-Interchangable-order.xml | 28 +-
.../Doc-Examples/Parsons-3-builder.xml | 208 +++++----
.../Features/MCQ-example-multiselqnalpha.xml | 36 +-
.../stacklibrary/Features/MCQ-example.xml | 31 +-
.../Features/Reveal_block_example.xml | 368 ++++++++--------
.../Features/Scientific-units.xml | 48 +-
.../Differential_Equation_3.xml | 3 +-
.../Topics/Complex_cube_roots.xml | 412 +++++++++---------
...hs-Discrete_mathematics_graph-theory-2.xml | 34 +-
.../Cross-product-non-cancellation.xml | 54 ++-
.../Diagonalizable-proof-comprehension.xml | 221 +++++-----
...Eigenvalues-eigenvectors-give-examples.xml | 242 +++++-----
.../LinearAlgebra/Eigenvalues-vectors-3-3.xml | 148 ++++---
.../LinearAlgebra/Eigenvalues-vectors-4-4.xml | 191 ++++----
.../Eigenvalues-vectors-PDPT.xml | 156 ++++---
.../Equation-plane-counter-example.xml | 107 +++--
.../LinearAlgebra/Linear-dependence.xml | 48 +-
.../Topics/LinearAlgebra/Linear-system.xml | 132 +++---
.../Matrix-Algebra-give-examples.xml | 302 +++++++------
.../LinearAlgebra/Proof-dot-product.xml | 167 ++++---
.../Proof-gaps-linear-dependence.xml | 316 +++++++-------
.../Show-Ax-forms-a-subspace-Parsons.xml | 27 +-
.../Topics/ODE_2nd_order_linear.xml | 52 ++-
.../Topics/Parsons-proof-template.xml | 118 +++--
.../Proof_comprehension_infinite_primes.xml | 166 ++++---
.../Proof/Proof_comprehension_roots_unity.xml | 106 +++--
.../Proof/Proof_gaps_induction_series.xml | 159 ++++---
.../Topics/Topics_units_basic.xml | 87 ++--
.../stacklibrary/Topics/Vector-Calculus.xml | 80 ++--
.../Topics/equivalence_reasoning_example.xml | 56 ++-
...ot-Discrete_mathematics_graph_theory-1.xml | 50 +--
186 files changed, 2407 insertions(+), 2630 deletions(-)
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 589de1919..624ecfdaf 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 be63a16d9..838e5d2f9 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 1c6b76b70..8ac523862 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 f0d451146..897bff045 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 61d1f54c1..b495b3d26 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 a7658e6a4..05167218d 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 045852082..cfb640303 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 2a7b98eef..c6daab905 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 8f5d3e1c8..3e769bebe 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 4285eeae5..47c21864c 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 7f9459ff7..ef3d182dc 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 8262fc00d..280157592 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 0fdaa11f3..f7344c556 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 c2f32580f..18849d72e 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 22c38de5e..f36c89815 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 9ff4c4130..2bea67bb3 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 6f9ae0720..9705ed3a4 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 c4e14d57c..b63e2d3d8 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 40b3a601f..dbe5162f5 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 e43538bb2..0a42df4a4 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 549bfa002..80fb543de 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 eafe27691..6587262f4 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 1ef7272c7..3540ffeeb 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 786d89c56..7406b65c1 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 bbce06423..c5a6449ef 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 f3be7bb74..1d69b2d14 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 65b648272..79dd07fdd 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 50a4e5f55..55437e78c 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 57af19ee6..3b33f6b1c 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 343ead376..8368496bb 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 da7272cd2..ff25eab13 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 3e41d0ca0..90f83b48c 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 eab28d2bd..a5e17aa42 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 218cf00ce..d5b67e265 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 f9bebeeab..c8212ad5e 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 a7ee1c797..63bcf8042 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 d5d341878..bb8cd6de4 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 d9bb02a05..82f5d89b5 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 e27abfa89..84f7f90f0 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 1d27af40a..3f6501c65 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 665720ec0..2366b21bc 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 6e9a4f449..8e5b4c36f 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 f0c9056fc..b3fff060b 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 460a1ac9c..4da2a22d2 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 acbd4060a..9266d4da4 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 da2be8cce..6f71fd2b7 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 38eaa5f64..d7de93b43 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 a800c6717..56cdf4ffc 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 30a097096..dd4b46c43 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 f8d3e1162..48dfc1644 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 6ac12771a..ed54942b0 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 24b800fdd..804d4debf 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 6b8985c21..329136fe3 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 152956b1a..790ae0fbd 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 24d2bf061..cfc3ba0be 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 fcf4dc4c0..78a535414 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 f0e345de8..41b4fbd03 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 49c7f4686..d6e695d45 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 366395b6c..8da5b12ab 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 f1f7c9df7..43b6d9768 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 2a19aeb4d..00594b58b 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 60408867e..947a43084 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 c0e0bb2c9..a83aca2f8 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 d478c5da6..45af7f1ff 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 12f9cde80..b867e181b 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 cbf3ebc52..1d3d903b3 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 be277becb..2264b4880 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 f2e51b1bf..998d4b483 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 000abe1db..af84b26cd 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 90d08d0d7..8b10db9cd 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 c4cedece3..50bee807c 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 47b5365c4..a4a463870 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 4ecab0209..2c4290d30 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 2b830006f..99df3331d 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 70bc474ff..8f9d5c897 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 78247f518..d449631ce 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 2e7b4a821..a8f46c831 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 8c4a02fb8..14bdce377 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 3f478656d..f5a44b887 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 32653f628..1996f2a5b 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 a33c632fc..8d102444f 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 47c68c5e9..a68bed2e2 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 4e3398b24..24f2e6ac5 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 025ea8646..d950989d0 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 ad4fa3b18..3fe28faf4 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 58d9fb130..09423a820 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 dafcfc62c..60a60feed 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 11cb41354..390637828 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 6ba429103..f27c59ed6 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 b3c1ae677..697dcd09e 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 3ad855d98..f3428979e 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 c86ef19bd..492469bc1 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 c0b97596b..1bd6cfd05 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 da8e126a2..ed2b3e551 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 e3d46e12a..620a95576 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 a90ac0a84..dbcc98802 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 4cb92a539..29b5fba5d 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 21a27ef04..6be5efdd7 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 2357a6895..a86eacb18 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 f84c99c49..3474c3b10 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 96782ef06..f8b11e4cc 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 5fa078ea8..a6bba5a02 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 21bfbdca5..55b935ecb 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 1a1208880..ee8378c06 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 4e802a8d6..bf271ed9f 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 1dd95a05e..9d6e366e4 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 c8210257c..20c9a71da 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 b855904df..cef9cfa0e 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 c977706d2..670d2701c 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 1ef2e1be0..3dbdb09fb 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 11d0b4f9d..20b9f413e 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 1b31f0cac..fe0b3616f 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 11ed10480..56cf54e72 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 cb08b5c66..73265af09 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 eb782aeec..c88469164 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 472a0580a..60a489fd8 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 ff02a9a22..1f4868571 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 f1f82a993..add8e3d0e 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 8a2aa58f7..d5298df16 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 59ff81350..246b1d89a 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 18ce062ca..83587aea1 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 af57ed740..d5a741533 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 e729f1730..ab6e4d318 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 3a72682cd..c3d793c6f 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 9e9a6da34..981c517b6 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 42c2630eb..864598666 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 c14b37983..4995931db 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 56e4ddccf..7353bd4af 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 031ad63da..95c8adf55 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 dc5178d70..54bd8df22 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 12b988010..5278442fd 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 fecbce3fe..a1a23503c 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 d26937caa..ede775a56 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 a2cc4dcb6..82d83cabe 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 641ce4f5c..e69158fe4 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 3e73fd6fc..866cdc7ba 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 b44076e1e..0d559ea47 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 ee0728028..07f73d2f6 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 fb082988f..bd86bcc84 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 2ba8a92c5..9085e307f 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 8489a5ccf..72cd99a92 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 4dd6439c6..40378dd87 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 6cba78325..31d92e3cf 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 511b41468..7dac9b5de 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 e32e6925f..97f9f4156 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 e9ba630a0..001fd4e90 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 f93abfd68..ee810718e 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 fa35afaf5..7960254c8 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 81ed88825..e2f3ad5dd 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 1d6e1acd5..352fd9a12 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 d7626c76f..03652736d 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 25a53e39c..6a8429892 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 218de6c84..ab533783e 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 91df6a159..ed94b65c1 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 b2b33f9a3..85299882e 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 24ac39863..f4d35523a 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 e9d535d95..f067345b4 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 c664cb2dd..b7ebeb7e8 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 cd4105a90..45faa81c9 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 7b8a37d78..5ea9bd0a0 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 5bd188f9b..e1822ef0e 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 2bd9aae26..db49466b8 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 c101d7873..30b0e6c2d 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 5fc293527..f24e1b1a0 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 a24f786db..d15262682 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 a7f5cb4a6..992c30ebb 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 0f5733f26..0a19ad10d 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 52b2598d1..4e956cb20 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 78edc28b2..ff0d86594 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 a05e5f1a8..77f6e064d 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 6f8c5a546..159b28d1b 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 a01d75ebf..efa1f9133 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 626ab0701..197abee13 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 3ea731c85..8b20b138c 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 3e00c3f41..11bb69fc3 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 7a6d32534..2f0aba6e8 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 28497df70..a63a96cd7 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 bc47ef6bb..4cc71b959 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 61b1c56f8..5e1969761 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 c6d81d08e..dccd28a14 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 59766eb27..3d2e718ef 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 e4871737a..627db29c4 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>
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<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>
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<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 51a2eaa03..ac59c3892 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 ad5639964..044eb8f56 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 dc913d7d3..523e33575 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 a345e374f..43a283b7e 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>
--
GitLab