DisableFunctions1
Disabling Functions so Students Must Simplify Answers
This PG code shows how to disable all functions and restrict student answers to fractions.
- File location in OPL: FortLewis/Authoring/Templates/Trig/DisableFunctions1.pg
- PGML location in OPL: FortLewis/Authoring/Templates/Trig/DisableFunctions1_PGML.pg
| PG problem file | Explanation |
|---|---|
|
Problem tagging: |
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DOCUMENT(); loadMacros( "PGstandard.pl", "MathObjects.pl", "AnswerFormatHelp.pl", "contextFraction.pl", ); TEXT(beginproblem()); |
Initialization: |
Context("Fraction-NoDecimals");
# Prevent pi from becoming 3.1415... and cos(pi) from
# becoming -1.
Context()->constants->set(pi => {keepName => 1});
$f1 = Formula("cos(pi)");
$f2 = Formula("sin(pi/3)");
Context()->functions->disable("All");
Context()->functions->enable("sqrt");
$answer1 = Compute("-1");
$answer2 = Compute("sqrt(3)/2");
|
Setup:
We choose a context that requires fractions as answers and does not allow decimals. After constructing the formulas involving trig functions, we disable all functions and re-enable the
Note that |
Context()->texStrings;
BEGIN_TEXT
Enter your answers as simplified fractions.
$BR
$BR
\( $f1 = \)
\{ ans_rule(20) \}
\{ AnswerFormatHelp("fractions") \}
$BR
$BR
\( $f2 = \)
\{ ans_rule(20) \}
\{ AnswerFormatHelp("fractions") \}
END_TEXT
Context()->normalStrings;
|
Main Text: |
$showPartialCorrectAnswers = 1; ANS( $answer1->cmp() ); ANS( $answer2->cmp() ); |
Answer Evaluation: |
Context()->texStrings;
BEGIN_SOLUTION
${PAR}SOLUTION:${PAR}
Solution explanation goes here.
END_SOLUTION
Context()->normalStrings;
COMMENT('MathObject version.');
ENDDOCUMENT();
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Solution: |
