InequalityAnswer1

Answer is an Inequality

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This PG code shows a question whose answer is an inequality.

• Download file: File:InequalityAnswer1.txt (change the file extension from txt to pg when you save it)
• File location in NPL: FortLewis/Authoring/Templates/Algebra/InequalityAnswer1.pg

Templates by Subject Area

PG problem file	Explanation
Problem tagging data	Problem tagging:
DOCUMENT(); loadMacros( "PGstandard.pl", "MathObjects.pl", "contextInequalities.pl", "AnswerFormatHelp.pl", ); TEXT(beginproblem());	Initialization: We must load contextInequalities.pl.
Context("Inequalities-Only"); Context()->flags->set(formatStudentAnswer=>'parsed'); $a = random(3,9,1); $ineq = "-$a x \leq 10"; # TeX $answer = Compute("x >= -10 / $a");	Setup: We require students to use inequalities by using Context("Inequalities-Only"). If we had used Context("Inequalities") instead, then students could also enter their answer using interval notation. For more details, please see contextInequalities.pl.html We use formatStudentAnswer=>'parsed' and Compute() so that the student's answer are left as fractions rather than reduced to decimals.
Context()->texStrings; BEGIN_TEXT Solve the inequality \( \displaystyle $ineq \). Enter your answer using inequality notation. $BR $BR \{ ans_rule(40) \} \{ AnswerFormatHelp("inequalities") \} END_TEXT Context()->normalStrings;	Main Text:
$showPartialCorrectAnswers = 1; ANS( $answer->cmp() );	Answer Evaluation:
Context()->texStrings; BEGIN_SOLUTION ${PAR}SOLUTION:${PAR} Solution explanation goes here. END_SOLUTION Context()->normalStrings; COMMENT("MathObject version."); ENDDOCUMENT();	Solution:

Templates by Subject Area