AnswerInExponent

Answer Blanks in the Exponent

This PG code shows how to check student answers that are equations. Note that this is an insertion, 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
DOCUMENT(); loadMacros( "PGstandard.pl", "MathObjects.pl", "PGcourse.pl", "unionTables.pl", ); TEXT(beginproblem());	Initialization: We need to include the macros file unionTables.pl (or PGunion.pl which also loads it).
Context("Numeric")->variables->are(a=>"Real",b=>"Real"); $n = random(3,9,1); # TeX $expression = "a^{$n} b^{$n}"; # MathObjects $base = Formula("a*b"); $exponent = Formula("$n"); # # Display exponents nicely # $w1 = 10; # width of 1st answer blank $w2 = 10; # width of 2nd answer blank Context()->texStrings; if ($displayMode eq 'TeX') { $showpower = "\( \displaystyle $expression = (" . ans_rule($w1) . ")^{" . ans_rule($w2) . "}\)"; } else { $showpower = ColumnTable( "\( \displaystyle $expression = \Big( \) " . ans_rule($w1) . " \( \Big) \)", ans_rule($w2).$BR.$BR, indent => 0, separation => 0, valign => "BOTTOM" ); } Context()->normalStrings;	Setup: We have a little bit of code to display the answer blanks nicely in different modes.
Context()->texStrings; BEGIN_TEXT Rewrite the following using a single exponent. $BR $BR $showpower END_TEXT Context()->normalStrings;	Main Text: The problem text section of the file is as we'd expect. We insert the nicely formatted answer blanks using $showpower.
$showPartialCorrectAnswers = 1; ANS( $base->cmp() ); ANS( $exponent->cmp() ); ENDDOCUMENT();	Answer Evaluation: As is the answer.

Problem Techniques Index