Difference between revisions of "DifferenceQuotient1"

From WeBWorK_wiki
Jump to navigation Jump to search
(Add link to PGML version in OPL)
(added historical tag and gave updated problem link)
 
(One intermediate revision by the same user not shown)
Line 1: Line 1:
  +
{{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problem has been replaced with [https://openwebwork.github.io/pg-docs/sample-problems/DiffCalc/DifferenceQuotient.html a newer version of this problem]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>
   
Line 5: Line 8:
 
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]
   
Line 16: Line 19:
   
 
<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>
Line 43: Line 46:
   
 
loadMacros(
 
loadMacros(
"PGstandard.pl",
+
'PGstandard.pl',
"MathObjects.pl",
+
'MathObjects.pl',
"parserDifferenceQuotient.pl",
+
'parserDifferenceQuotient.pl',
  +
'PGML.pl',
  +
'PGcourse.pl'
 
);
 
);
 
 
TEXT(beginproblem());
 
TEXT(beginproblem());
 
</pre>
 
</pre>
Line 65: Line 67:
 
<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>
Line 85: Line 87:
 
<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>
Line 133: Line 106:
 
<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 09:19, 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