LimitsOfIntegration

Answer Blanks in the Limits of an Integral

This PG code shows how to put answer blanks into the limits of an integral.

Problem Techniques Index

PG problem file	Explanation
DOCUMENT(); loadMacros( "PGstandard.pl", "MathObjects.pl", "PGunion.pl", ); TEXT(beginproblem());	Initialization: We need to include the macros file PGunion.pl.
Context("Numeric"); # # display the integral nicely # if ($displayMode eq 'TeX') { $integral = '\[\int_{'.ans_rule(4).'}^{'.ans_rule(4).'}'. ans_rule(10).'\,dx\]'; } else { $integral = BeginTable(). Row(['\(\displaystyle \int\)', ans_rule(4).$BR.$BR.ans_rule(4), ans_rule(10), '\(dx\).'],separation=>2). EndTable(); }	Setup: We define a mode dependent integral with three answer blanks.
Context()->texStrings; BEGIN_TEXT Set up the integral of \( x^2 \) from 1 to 3. $PAR $BCENTER $integral $ECENTER END_TEXT Context()->normalStrings;	Main Text: The problem text section of the file is as we'd expect. We insert the integral with answer blanks using $integral.
$showPartialCorrectAnswers = 1; ANS( Real(3)->cmp() ); ANS( Real(1)->cmp() ); ANS( Formula("x^2")->cmp() ); ENDDOCUMENT();	Answer Evaluation: As is the answer.

Problem Techniques Index