https://webwork.maa.org/mediawiki_new/index.php?title=RowOperations1&feed=atom&action=history
RowOperations1 - Revision history
2024-03-29T06:03:09Z
Revision history for this page on the wiki
MediaWiki 1.34.0
https://webwork.maa.org/mediawiki_new/index.php?title=RowOperations1&diff=23790&oldid=prev
Pstaabp: add historical tag and give links to newer problems.
2023-07-18T10:26:03Z
<p>add historical tag and give links to newer problems.</p>
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<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">Revision as of 10:26, 18 July 2023</td>
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Pstaabp
https://webwork.maa.org/mediawiki_new/index.php?title=RowOperations1&diff=15896&oldid=prev
Paultpearson: PGML example link
2015-06-14T20:26:37Z
<p>PGML example link</p>
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<td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div></p></div></td>
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<td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* File location in OPL: [https://github.com/openwebwork/webwork-open-problem-library/blob/master/OpenProblemLibrary/FortLewis/Authoring/Templates/LinAlg/RowOperations1.pg FortLewis/Authoring/Templates/LinAlg/RowOperations1.pg]</div></td>
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<td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* File location in OPL: [https://github.com/openwebwork/webwork-open-problem-library/blob/master/OpenProblemLibrary/FortLewis/Authoring/Templates/LinAlg/RowOperations1.pg FortLewis/Authoring/Templates/LinAlg/RowOperations1.pg]</div></td>
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Paultpearson
https://webwork.maa.org/mediawiki_new/index.php?title=RowOperations1&diff=15895&oldid=prev
Paultpearson: Add {\displaystyle }
2014-09-03T20:23:33Z
<p>Add {\displaystyle }</p>
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<td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>$BR</div></td>
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<td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>\( $A \mathop{\longrightarrow}^{$op} \)</div></td>
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Paultpearson
https://webwork.maa.org/mediawiki_new/index.php?title=RowOperations1&diff=15894&oldid=prev
Paultpearson: Describe the code.
2014-06-29T03:15:36Z
<p>Describe the code.</p>
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<td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><b>Setup:</b> </div></td>
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<td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><b>Setup:</b> </div></td>
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<td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Construct a matrix with three distinct rows.</div></td>
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<td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Create a string <code>$op</code> of Tex code that describes the row operation.</div></td>
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<td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Use <code>$A->row(i)</code> to extract the ith row of the matrix A as a MathObject.</div></td>
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<td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Use <code>$A->row(1) + $k*($A->row(2))</code> to perform the row operation and place it into the first row of the answer matrix.</div></td>
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Paultpearson
https://webwork.maa.org/mediawiki_new/index.php?title=RowOperations1&diff=15893&oldid=prev
Paultpearson at 03:10, 29 June 2014
2014-06-29T03:10:28Z
<p></p>
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<td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>$A = Matrix([</div></td>
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<td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>$A = Matrix([</div></td>
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<td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[<del class="diffchange diffchange-inline">non_zero_random(-5,5,1),non_zero_random(-5,5,1),</del>non_zero_random(-5,5,1),non_zero_random(-5,5,1)],</div></td>
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<td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[non_zero_random(-5,5,1),non_zero_random(-5,5,1)],</div></td>
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<td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[<del class="diffchange diffchange-inline">non_zero_random(-5,5,1),non_zero_random(-5,5,1),</del>non_zero_random(-5,5,1),non_zero_random(-5,5,1)],</div></td>
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<td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[non_zero_random(-5,5,1),non_zero_random(-5,5,1)],</div></td>
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<td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[<del class="diffchange diffchange-inline">non_zero_random(-5,5,1),non_zero_random(-5,5,1),</del>non_zero_random(-5,5,1),non_zero_random(-5,5,1)],</div></td>
<td class="diff-marker">+</td>
<td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[non_zero_random(-5,5,1),non_zero_random(-5,5,1)],</div></td>
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Paultpearson
https://webwork.maa.org/mediawiki_new/index.php?title=RowOperations1&diff=15892&oldid=prev
Paultpearson: New row operations question
2014-06-29T03:07:56Z
<p>New row operations question</p>
<p><b>New page</b></p><div><h2>Row Operations</h2><br />
<br />
[[File:RowOperations1.png|300px|thumb|right|Click to enlarge]]<br />
<p style="background-color:#f9f9f9;border:black solid 1px;padding:3px;"><br />
This PG code shows how to ask students to compute the result of elementary row operations.<br />
</p><br />
* File location in OPL: [https://github.com/openwebwork/webwork-open-problem-library/blob/master/OpenProblemLibrary/FortLewis/Authoring/Templates/LinAlg/RowOperations1.pg FortLewis/Authoring/Templates/LinAlg/RowOperations1.pg]<br />
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[[SubjectAreaTemplates|Templates by Subject Area]]<br />
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<table cellspacing="0" cellpadding="2" border="0"><br />
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<th> PG problem file </th><br />
<th> Explanation </th><br />
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[http://webwork.maa.org/wiki/Tagging_Problems Problem tagging data]<br />
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<b>Problem tagging:</b><br />
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<pre><br />
DOCUMENT();<br />
loadMacros(<br />
"PGstandard.pl",<br />
"MathObjects.pl",<br />
"PGcourse.pl",<br />
);<br />
$showPartialCorrectAnswers = 0;<br />
TEXT(beginproblem()); <br />
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<b>Initialization:</b><br />
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<!-- Setup section --><br />
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<pre><br />
Context('Matrix');<br />
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do {<br />
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$A = Matrix([<br />
[non_zero_random(-5,5,1),non_zero_random(-5,5,1),non_zero_random(-5,5,1),non_zero_random(-5,5,1)],<br />
[non_zero_random(-5,5,1),non_zero_random(-5,5,1),non_zero_random(-5,5,1),non_zero_random(-5,5,1)],<br />
[non_zero_random(-5,5,1),non_zero_random(-5,5,1),non_zero_random(-5,5,1),non_zero_random(-5,5,1)],<br />
]);<br />
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} until (($A->row(1) != $A->row(2)) && <br />
($A->row(1) != $A->row(3)) && <br />
($A->row(2) != $A->row(3)));<br />
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$k = random(2,9,1);<br />
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$op = "R_{1} + $k R_{2} \rightarrow R_{1}";<br />
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$answer = Matrix([<br />
$A->row(1) + $k*($A->row(2)),<br />
$A->row(2),<br />
$A->row(3),<br />
]);<br />
</pre><br />
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<b>Setup:</b> <br />
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<pre><br />
Context()->texStrings;<br />
BEGIN_TEXT<br />
Give the result of applying the row operation \( $op \) to the given matrix.<br />
$BR<br />
$BR<br />
\( $A \mathop{\longrightarrow}^{$op} \)<br />
\{ $answer->ans_array \}<br />
END_TEXT<br />
Context()->normalStrings;<br />
</pre><br />
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<b>Main Text:</b><br />
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<!-- Answer evaluation section --><br />
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<pre><br />
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ANS( $answer->cmp() );<br />
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COMMENT('MathObject version.');<br />
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ENDDOCUMENT();<br />
</pre><br />
<td style="background-color:#eeccff;padding:7px;"><br />
<p><br />
<b>Answer Evaluation:</b><br />
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</table><br />
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<p style="text-align:center;"><br />
[[SubjectAreaTemplates|Templates by Subject Area]]<br />
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[[Category:Sample Problems]]<br />
[[Category:Subject Area Templates]]</div>
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