FormattingCorrectAnswers: Equations

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Formatting Correct Answers: Equations: PG Code Snippet


This code snippet shows the essential PG code to check student answers that are equations. Note that these are insertions, not a complete PG file. This code will have to be incorporated into the problem file on which you are working.

Problem Techniques Index

PG problem file Explanation
  loadMacros("parserImplicitPlane.pl");

We don't have to change the tagging and documentation section of the problem file. In the initialization section, we need to include the macros file parserImplicitPlane.pl.


  $dfx = 3;
  $yintercept = 4;
  Context("ImplicitPlane");
  Context()->variables->remove("z");
  $h = ImplicitPlane("y = $dfx x + $yintercept");

In the problem set-up section of the file, we specify that the Context should be ......, and define the answer to be a formula.

Notes: on using this and related Contexts.

  BEGIN_TEXT
  ...... question text ......
  END_TEXT

The problem text section of the file is as we'd expect.

  ANS( $expr->cmp() );

As is the answer.

Problem Techniques Index

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