Difference between revisions of "DifferenceQuotient1"

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(Add link to PGML version in OPL)
(added historical tag and gave updated problem link)
 
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{{historical}}
  +
  +
<p style="font-size: 120%;font-weight:bold">This problem has been replaced with [https://openwebwork.github.io/pg-docs/sample-problems/DiffCalc/DifferenceQuotient.html a newer version of this problem]</p>
 
<h2>Answer is a Difference Quotient</h2>
 
<h2>Answer is a Difference Quotient</h2>
   
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This PG code shows how to require students to simplify a difference quotient.
 
This PG code shows how to require students to simplify a difference quotient.
 
</p>
 
</p>
* File location in OPL: [https://github.com/openwebwork/webwork-open-problem-library/blob/master/OpenProblemLibrary/FortLewis/Authoring/Templates/DiffCalc/DifferenceQuotient1.pg NationalProblemLibrary/FortLewis/Authoring/Templates/DiffCalc/DifferenceQuotient1.pg]
+
<!--* File location in OPL: [https://github.com/openwebwork/webwork-open-problem-library/blob/master/OpenProblemLibrary/FortLewis/Authoring/Templates/DiffCalc/DifferenceQuotient1.pg NationalProblemLibrary/FortLewis/Authoring/Templates/DiffCalc/DifferenceQuotient1.pg] -->
 
* PGML location in OPL: [https://github.com/openwebwork/webwork-open-problem-library/blob/master/OpenProblemLibrary/FortLewis/Authoring/Templates/DiffCalc/DifferenceQuotient1_PGML.pg FortLewis/Authoring/Templates/DiffCalc/DifferenceQuotient1_PGML.pg]
 
* PGML location in OPL: [https://github.com/openwebwork/webwork-open-problem-library/blob/master/OpenProblemLibrary/FortLewis/Authoring/Templates/DiffCalc/DifferenceQuotient1_PGML.pg FortLewis/Authoring/Templates/DiffCalc/DifferenceQuotient1_PGML.pg]
   
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<tr valign="top">
 
<tr valign="top">
<th> PG problem file </th>
+
<th style="width: 50%"> PG problem file </th>
 
<th> Explanation </th>
 
<th> Explanation </th>
 
</tr>
 
</tr>
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loadMacros(
 
loadMacros(
"PGstandard.pl",
+
'PGstandard.pl',
"MathObjects.pl",
+
'MathObjects.pl',
"parserDifferenceQuotient.pl",
+
'parserDifferenceQuotient.pl',
  +
'PGML.pl',
  +
'PGcourse.pl'
 
);
 
);
 
 
TEXT(beginproblem());
 
TEXT(beginproblem());
 
</pre>
 
</pre>
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<td style="background-color:#ffffdd;border:black 1px dashed;">
 
<td style="background-color:#ffffdd;border:black 1px dashed;">
 
<pre>
 
<pre>
Context("Numeric");
+
Context('Numeric');
   
$limit = DifferenceQuotient("2*x+h","h");
+
$limit = DifferenceQuotient('2*x+h','h');
   
$fp = Compute("2 x");
+
$fp = Compute('2 x');
 
</pre>
 
</pre>
 
</td>
 
</td>
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<td style="background-color:#ffdddd;border:black 1px dashed;">
 
<td style="background-color:#ffdddd;border:black 1px dashed;">
 
<pre>
 
<pre>
Context()->texStrings;
 
  +
BEGIN_PGML
BEGIN_TEXT
 
  +
[`` \frac{d}{dx} \big( x^2 \big) = \lim_{h \to 0} \frac{(x+h)^2-x^2}{h}
Simplify and then evaluate the limit.
 
  +
= \lim_{h \to 0} \big(``][_______________]{$limit}[`` \big) = ``]
$BR
 
  +
[_______________]{$fp}
$BR
 
  +
\( \displaystyle
 
  +
END_PGML
\frac{d}{dx} \big( x^2 \big)
 
=
 
\lim_{h \to 0} \frac{(x+h)^2-x^2}{h}
 
=
 
\lim_{h \to 0}
 
\big(
 
\)
 
\{ ans_rule(15) \}
 
\( \big) = \)
 
\{ ans_rule(15) \}
 
END_TEXT
 
Context()->normalStrings;
 
 
</pre>
 
</pre>
 
<td style="background-color:#ffcccc;padding:7px;">
 
<td style="background-color:#ffcccc;padding:7px;">
 
<p>
 
<p>
 
<b>Main Text:</b>
 
<b>Main Text:</b>
</p>
 
</td>
 
</tr>
 
 
<!-- Answer evaluation section -->
 
 
<tr valign="top">
 
<td style="background-color:#eeddff;border:black 1px dashed;">
 
<pre>
 
$showPartialCorrectAnswers = 1;
 
 
ANS( $limit->cmp() );
 
ANS( $fp->cmp() );
 
</pre>
 
<td style="background-color:#eeccff;padding:7px;">
 
<p>
 
<b>Answer Evaluation:</b>
 
 
</p>
 
</p>
 
</td>
 
</td>
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<td style="background-color:#ddddff;border:black 1px dashed;">
 
<td style="background-color:#ddddff;border:black 1px dashed;">
 
<pre>
 
<pre>
Context()->texStrings;
 
  +
BEGIN_PGML_SOLUTION
BEGIN_SOLUTION
 
 
Solution explanation goes here.
 
Solution explanation goes here.
END_SOLUTION
 
  +
END_PGML_SOLUTION
Context()->normalStrings;
 
   
COMMENT('MathObject version.');
+
COMMENT('Uses PGML.');
   
 
ENDDOCUMENT();
 
ENDDOCUMENT();

Latest revision as of 08:19, 28 June 2023

This article has been retained as a historical document. It is not up-to-date and the formatting may be lacking. Use the information herein with caution.

This problem has been replaced with a newer version of this problem

Answer is a Difference Quotient

Click to enlarge

This PG code shows how to require students to simplify a difference quotient.


Templates by Subject Area

PG problem file Explanation

Problem tagging data

Problem tagging:

DOCUMENT();

loadMacros(
  'PGstandard.pl',
  'MathObjects.pl',
  'parserDifferenceQuotient.pl',
  'PGML.pl',
  'PGcourse.pl'
);
TEXT(beginproblem());

Initialization: We need to include the macros file parserDifferenceQuotient.pl.

Context('Numeric');

$limit = DifferenceQuotient('2*x+h','h');

$fp = Compute('2 x');

Setup: The routine DifferenceQuotient("function","variable") takes the simplified function and a variable name. If the variable is omitted, dx is used by default.

BEGIN_PGML
[`` \frac{d}{dx} \big( x^2 \big) = \lim_{h \to 0} \frac{(x+h)^2-x^2}{h}
  = \lim_{h \to 0} \big(``][_______________]{$limit}[`` \big) = ``]
[_______________]{$fp}

END_PGML

Main Text:

BEGIN_PGML_SOLUTION
Solution explanation goes here.
END_PGML_SOLUTION

COMMENT('Uses PGML.');

ENDDOCUMENT();

Solution:

Templates by Subject Area