## DESCRIPTION ## Algebra: answer blank in the exponent ## ENDDESCRIPTION ## KEYWORDS('algebra', 'answer blank in the exponent') ## DBsubject('WeBWorK') ## DBchapter('WeBWorK Tutorial') ## DBsection('Fort Lewis Tutorial 2011') ## Date('01/30/2011') ## Author('Paul Pearson') ## Institution('Fort Lewis College') ## TitleText1('') ## EditionText1('') ## AuthorText1('') ## Section1('') ## Problem1('') ########################### # Initialization DOCUMENT(); loadMacros( "PGstandard.pl", "MathObjects.pl", "PGcourse.pl", "unionTables.pl", ); TEXT(beginproblem()); ########################### # Setup 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; ########################### # Main text Context()->texStrings; BEGIN_TEXT Rewrite the following using a single exponent. \$BR \$BR \$showpower END_TEXT Context()->normalStrings; ############################ # Answer evaluation \$showPartialCorrectAnswers = 1; ANS( \$base->cmp() ); ANS( \$exponent->cmp() ); ############################ # Solution Context()->texStrings; BEGIN_SOLUTION \${PAR}SOLUTION:\${PAR} Solution explanation goes here. END_SOLUTION Context()->normalStrings; COMMENT('MathObject version.'); ENDDOCUMENT();