[npl] / trunk / NationalProblemLibrary / UVA-FinancialMath / setFinancialMath-Sect10-AlgebraPrereqs / math114-0-18.pg Repository: Repository Listing bbplugincoursesdistsnplrochestersystemwww

# View of /trunk/NationalProblemLibrary/UVA-FinancialMath/setFinancialMath-Sect10-AlgebraPrereqs/math114-0-18.pg

Wed Oct 12 19:45:41 2005 UTC (7 years, 7 months ago) by gage
File size: 1112 byte(s)
This commit was generated by cvs2svn to compensate for changes in r5, which
included commits to RCS files with non-trunk default branches.

    1 ## DESCRIPTION
2 ##  Financial mathematics: algebra prerequisites
3 ## ENDDESCRIPTION
4
5 ## KEYWORDS('financial mathematics', 'algebra')
6 ## JJH tagged this problem.
7
8 ## DBsubject('Financial Mathematics')
9 ## DBchapter('Introduction to Interest')
10 ## DBsection('Algebra Prerequisites')
11 ## Date('5/22/2005')
12 ## Author('Jeff Holt')
13 ## Institution('UVA')
14 ## TitleText1('Financial Mathematics')
15 ## EditionText1('1')
16 ## AuthorText1('Holt')
17 ## Section1('1.0')
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 $showPartialCorrectAnswers = 1; 32 33$a = random(2,9,1);
34 $b = random(2,4,1); 35$c = non_zero_random(-10,10,1);
36
37 TEXT(EV2(<<EOT));
38 Solve the equation $\displaystyle \frac{a}{x}+\frac{b}{2x} = c$ algebraically.
39
40 $BR$BR $$x =$$ \{ans_rule(20) \}
41 $BR$BR
42 EOT
43
44 $ans = ($a + $b/2)/$c;
45 ANS(num_cmp(\$ans, tol=>.001));
46
47 ENDDOCUMENT();        # This should be the last executable line in the problem.