View of /trunk/NationalProblemLibrary/ma122DB/set0/prob5.pg

    1 ##DESCRIPTION
    2 ##  practice problem
    3 ##ENDDESCRIPTION
    4 ## nsilva tagged and PAID on 9-27-2004
    5 
    6 ## DBsubject('WeBWorK')
    7 ## DBchapter('WeBWorK Tutorial')
    8 ## DBsection('WeBWorK Tutorial')
    9 ## Date('6/3/2002')
   10 ## Author('')
   11 ## Institution('')
   12 ## TitleText1(' ')
   13 ## EditionText1(' ')
   14 ## AuthorText1(' ')
   15 ## Section1(' ')
   16 ## Problem1(' ')
   17 
   18 
   19 ##KEYWORDS('sample')
   20 
   21 DOCUMENT();        # This should be the first executable line in the problem.
   22 
   23 loadMacros(
   24 "PG.pl",
   25 "PGbasicmacros.pl",
   26 "PGchoicemacros.pl",
   27 "PGanswermacros.pl",
   28 "PGauxiliaryFunctions.pl"
   29 );
   30 
   31 TEXT(beginproblem());
   32 $showPartialCorrectAnswers = 0;
   33 
   34 
   35 $a = random(100,200,1);
   36 $b = random(250,350,1);
   37 $c = random(-31,-3,1);
   38 TEXT(EV2(<<EOT));
   39 This problem demonstrates a WeBWorK question that requires you to enter a number or a fraction. $PAR
   40 Evaluate the expression \(\frac{|$a-$b|}{|$c|}\).  Give you answer in decimal notation
   41 correct to three decimal places or give your answer as a fraction.
   42 $BR $BR \{ANS_RULE(1,10) \}
   43 $BR
   44 EOT
   45 $ans = abs($a-$b)/abs($c);
   46 ANS(num_cmp($ans, mode=>"arith"));
   47 TEXT(<<EOT);
   48 $PAR
   49 Now that you have finished you can use the "Prob. List" button at the top of the page
   50 to return to the problem list page.  You'll see that the problems you have done have been
   51 labeled as correct or incorrect, so you can go back and do problems you skipped or couldn't
   52 get right the first time.  Once you have done a problem correctly it is ALWAYS listed as correct
   53 even if you go back and do it incorrectly later.  This means you can use WeBWorK to review
   54 course material without any danger of changing your grade.
   55 
   56 EOT
   57 
   58 ENDDOCUMENT();        # This should be the last executable line in the problem.