InequalityAnswer1

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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");

$a = random(3,9,1);

$ineq = "-$a x <= 10";

$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.

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