EquationsDefiningFunctions
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Equations Defining Functions (Not Implicit)
This PG code shows how to check student answers that are equations that define functions.
| PG problem file | Explanation |
|---|---|
DOCUMENT(); loadMacros( "PGstandard.pl", "MathObjects.pl", "parserAssignment.pl", ); |
Initialization:
We need to include the macro file |
Context("Numeric")->variables->are(x=>"Real",y=>"Real");
parser::Assignment->Allow;
parser::Assignment->Function("f");
$eqn = Formula("y=5x+2");
$f = Formula("f(x)=5x+2");
|
Setup: We must allow assignment, and declare any function names we wish to use. |
BEGIN_TEXT
Enter \( y = 5x+2 \) \{ ans_rule(20) \}
$BR
Enter \( f(x) = 5x+2 \) \{ ans_rule(20) \}
END_TEXT
|
Main Text: The problem text section of the file is as we'd expect. |
ANS( $eqn->cmp() ); ANS( $f->cmp() ); |
Answer Evaluation: As is the answer. |
- POD documentation: parserAssignment.pl.html
- PG macro parserAssignment.pl
