PeriodicAnswers1

Periodic Answers

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This PG code shows how to check student answers that are periodic.

• Download file: File:PeriodicAnswers1.txt (change the file extension from txt to pg when you save it)
• File location in NPL: FortLewis/Authoring/Templates/Trig/PeriodicAnswers1.pg

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PG problem file	Explanation
Problem tagging data	Problem tagging:
DOCUMENT(); loadMacros( "PGstandard.pl", "MathObjects.pl", "AnswerFormatHelp.pl", ); TEXT(beginproblem());	Initialization:
Context("Numeric"); $answer = Real("pi/2")->with(period=>pi);	Setup: This is self-explanatory.
Context()->texStrings; BEGIN_TEXT Enter a solution to \( \cos(\theta) = 0 \). $BR $BR \( \theta = \) \{ ans_rule(10) \} \{ AnswerFormatHelp("angles") \} END_TEXT Context()->normalStrings;	Main Text:
$showPartialCorrectAnswers = 1; ANS( $answer->cmp() );	Answer Evaluation:
Context()->texStrings; BEGIN_SOLUTION The cosine of an angle is zero when the angle is an integer multiple of \( \pi \). END_SOLUTION Context()->normalStrings; ENDDOCUMENT();	Solution:

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