Difference between revisions of "InequalityEvaluators"
(added historical tag and gave updated problem link) |
|||
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been replaced with [https://openwebwork.github.io/pg-docs/sample-problems/problem-techniques/InequalityEvaluators.html a newer version of this problem]</p> |
||
<h2>Inequalities as Answers</h2> |
<h2>Inequalities as Answers</h2> |
||
Latest revision as of 09:56, 28 June 2023
This problem has been replaced with a newer version of this problem
Inequalities as Answers
This is the essential code for having inequalities as student answers.
PG problem file | Explanation |
---|---|
DOCUMENT(); loadMacros( "PGstandard.pl", "contextInequalities.pl", "PGcourse.pl", ); TEXT(beginproblem()); |
Initialization:
Include the macro file |
Context("Inequalities-Only"); Context()->variables->add(y=>"Real"); # Context()->constants->add(EmptySet => Set()); # Context()->flags->set(noneWord=>"EmptySet"); # Context()->flags->set(ignoreEndpointTypes=>1); # f(x) = x^2 - 16 on -1 <= x <= 5 $f = Formula("x^2 - 16"); $range = Compute("-16 <= y <= 9"); Context()->variables->remove("x"); |
Setup:
Using
Uncommenting the lines containing
Uncommenting
As of January 2010, the inequality is not variable-specific. If we had not removed the default variable x from the context using |
Context()->texStrings; BEGIN_TEXT What is the range of \( y = f(x) = $f \) on the domain \( -1 \leq x \leq 5 \)? $BR $BR Range: \{ ans_rule(20) \} Enter your answer using inequalities (not intervals). END_TEXT Context()->normalStrings; |
Main Text: The problem text section of the file is as we'd expect. |
ANS( $range->cmp() ); ENDDOCUMENT(); |
Answer Evaluation: As is the answer. |
- POD documentation: contextInequalities.pl
- PG macro: contextInequalities.pl