## DESCRIPTION
##   The Dot Product
## ENDDESCRIPTION

## KEYWORDS('Dot Product')
## Tagged by nhamblet

## DBsubject('Calculus')
## DBchapter('Vectors and the Geometry of Space')
## DBsection('The Dot Product')
## Date('8/3/2000')
## Author('Joseph Neisendorfer')
## Institution('Rochester')
## TitleText1('')
## EditionText1('')
## AuthorText1('')
## Section1('')
## Problem1('')

DOCUMENT();	 # This should be the first executable line in the problem.

loadMacros("PG.pl",      
           "PGbasicmacros.pl",
           "PGchoicemacros.pl",      
           "PGanswermacros.pl",
           "PGauxiliaryFunctions.pl"     
          );      

TEXT(beginproblem());

#Do not show partial correct answers
$showPartialCorrectAnswers = 1;

$mc = new_multiple_choice();

$mc->qa(
	"If Yoda says to Luke Skywalker, ${LQ}The Force be with you,$RQ then the dot
	product of the Force and Luke should be:",
	"positive",
);

$mc->extra("zero", "negative", "any real number");

BEGIN_TEXT
$PAR
\{$mc->print_q\}$BR
\{$mc->print_a\}
END_TEXT

ANS(str_cmp($mc->correct_ans) );

ENDDOCUMENT();		# This should be the last executable line in the problem.