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```    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());
32
33 \$a = random(2,100,1);
34
35 TEXT(EV2(<<EOT));
36 The expression \( x^{\$a} x^{-\$a} \) equals:
37 \$BR \$BR \{ans_rule(10) \}
38 \$BR