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# View of /trunk/NationalProblemLibrary/270/setDerivatives8RelatedRates/s2_8_3.pg

Sat Jun 3 13:50:11 2006 UTC (7 years ago) by gage
File size: 940 byte(s)
Cleaned up code using the convert-functions.pl script


    1 ## DESCRIPTION
2 ##  Calculus
3 ## ENDDESCRIPTION
4
5 ## KEYWORDS('Calculus','Derivatives')
6 ## Tagged by dgt5v
7
8 ## DBsubject('Calculus')
9 ## DBchapter('Differentiation')
10 ## DBsection('Related Rates')
11 ## Date('')
12 ## Author('')
13 ## Institution('')
14 ## TitleText1('')
15 ## EditionText1('')
16 ## AuthorText1('')
17 ## Section1('')
18 ## Problem1('')
19
20 DOCUMENT();        # This should be the first executable line in the problem.
21
23 "PG.pl",
24 "PGbasicmacros.pl",
25 "PGchoicemacros.pl",
27 "PGauxiliaryFunctions.pl"
28 );
29
30 TEXT(beginproblem());
31 $showPartialCorrectAnswers = 0; 32 33$a1 = random(1,5,1);
34 $b1 = random(1,5,1); 35$c1 = random(1,5,1);
36
37 $deriv1 = -$c1*$c1*$b1/$a1; 38 39 TEXT(EV2(<<EOT)); 40 Let $xy = a1$ 41 and let $\frac { dy }{ dt } = b1$ 42 Find $$\frac { dx }{ dt }$$ when $$x = c1$$.$BR
43 \{ans_rule(20) \}
44 EOT
45
46 $ans =$deriv1;
47 ANS(num_cmp(\$ans));
48
49 ENDDOCUMENT();        # This should be the last executable line in the problem.