Difference between revisions of "DomainRange1"
(5 intermediate revisions by 2 users not shown) | |||
Line 5: | Line 5: | ||
This PG code shows how to evaluate answers that are inequalities which use different variables. |
This PG code shows how to evaluate answers that are inequalities which use different variables. |
||
</p> |
</p> |
||
− | * Download file: [[File:DomainRange1.txt]] (change the file extension from txt to pg when you save it) |
||
+ | * File location in OPL: [https://github.com/openwebwork/webwork-open-problem-library/blob/master/OpenProblemLibrary/FortLewis/Authoring/Templates/Precalc/DomainRange1.pg FortLewis/Authoring/Templates/Precalc/DomainRange1.pg] |
||
− | * |
+ | * PGML location in OPL: [https://github.com/openwebwork/webwork-open-problem-library/blob/master/OpenProblemLibrary/FortLewis/Authoring/Templates/Precalc/DomainRange1_PGML.pg FortLewis/Authoring/Templates/Precalc/DomainRange1_PGML.pg] |
<br clear="all" /> |
<br clear="all" /> |
||
Line 71: | Line 71: | ||
Context("Inequalities-Only")->variables->are(x=>"Real"); |
Context("Inequalities-Only")->variables->are(x=>"Real"); |
||
+ | Context()->flags->set(formatStudentAnswer=>'parsed'); |
||
+ | |||
$domain = Compute("x >= 4"); |
$domain = Compute("x >= 4"); |
||
</pre> |
</pre> |
||
Line 77: | Line 79: | ||
<p> |
<p> |
||
<b>Setup 1:</b> |
<b>Setup 1:</b> |
||
− | We specify the context in a way that requires students to enter their answer using inequalities and the variable x. If we had used <code>Context("Inequalities")</code> instead, then students would also be able to enter answers using interval notation. |
+ | We specify the context in a way that requires students to enter their answer using inequalities and the variable x. If we had used <code>Context("Inequalities")</code> instead, then students would also be able to enter answers using interval notation. For more details, please see [http://webwork.maa.org/pod/pg/macros/contextInequalities.html contextInequalities.pl] |
+ | </p> |
||
+ | <p> |
||
+ | We use <code>formatStudentAnswer=>'parsed'</code> and <code>Compute()</code> so that the student's answer are left as fractions rather than reduced to decimals. |
||
</p> |
</p> |
||
</td> |
</td> |
||
Line 131: | Line 133: | ||
<pre> |
<pre> |
||
Context("Inequalities-Only")->variables->are(y=>"Real"); |
Context("Inequalities-Only")->variables->are(y=>"Real"); |
||
+ | Context()->flags->set(formatStudentAnswer=>'parsed'); |
||
$range = Compute("y >= 0"); |
$range = Compute("y >= 0"); |
||
Line 209: | Line 212: | ||
[[Category:Top]] |
[[Category:Top]] |
||
− | [[Category: |
+ | [[Category:Sample Problems]] |
+ | [[Category:Subject Area Templates]] |
Revision as of 17:53, 7 April 2021
Domain and Range of a Function
This PG code shows how to evaluate answers that are inequalities which use different variables.
- File location in OPL: FortLewis/Authoring/Templates/Precalc/DomainRange1.pg
- PGML location in OPL: FortLewis/Authoring/Templates/Precalc/DomainRange1_PGML.pg
PG problem file | Explanation |
---|---|
Problem tagging: |
|
DOCUMENT(); loadMacros( "PGstandard.pl", "MathObjects.pl", "contextInequalities.pl", "AnswerFormatHelp.pl", ); TEXT(beginproblem()); |
Initialization:
We must load |
Context("Numeric"); $f = Compute("sqrt(x-4)"); Context("Inequalities-Only")->variables->are(x=>"Real"); Context()->flags->set(formatStudentAnswer=>'parsed'); $domain = Compute("x >= 4"); |
Setup 1:
We specify the context in a way that requires students to enter their answer using inequalities and the variable x. If we had used
We use |
Context()->texStrings; BEGIN_TEXT Suppose \( f(x) = $f \). Enter inequalities for the domain and range of \( f \). $BR $BR Domain: \{ ans_rule(20) \} \{ AnswerFormatHelp("inequalities") \} $BR END_TEXT Context()->normalStrings; |
Main Text 1: |
$showPartialCorrectAnswers = 1; ANS( $domain->cmp() ); |
Answer Evaluation 1: |
Context("Inequalities-Only")->variables->are(y=>"Real"); Context()->flags->set(formatStudentAnswer=>'parsed'); $range = Compute("y >= 0"); |
Setup 2: We must reset the context and the variable so that students must enter the variable y in their answer. |
Context()->texStrings; BEGIN_TEXT Range:$SPACE$SPACE \{ ans_rule(20) \} \{ AnswerFormatHelp("inequalities") \} END_TEXT Context()->normalStrings; |
Main Text 2: |
ANS( $range ->cmp() ); |
Answer Evaluation 2: |
Context()->texStrings; BEGIN_SOLUTION ${PAR}SOLUTION:${PAR} Solution explanation goes here. END_SOLUTION Context()->normalStrings; COMMENT('MathObject version.'); ENDDOCUMENT(); |
Solution: |