[npl] / trunk / NationalProblemLibrary / NAU / setExpLog / ExpEq3.pg Repository: Repository Listing bbplugincoursesdistsnplrochestersystemwww

# View of /trunk/NationalProblemLibrary/NAU/setExpLog/ExpEq3.pg

Thu Aug 25 18:06:07 2011 UTC (20 months, 3 weeks ago) by aubreyja
File size: 1051 byte(s)
Adding NAU problems to the NPL

    1 ##DESCRIPTION
2 ## DBsubject('Algebra')
3 ## DBchapter('Exponential and Logarithmic Functions')
4 ## DBsection('Exponential and Logarithmic Equations')
5 ## KEYWORDS()
6 ## Author('Katie Louchart')
7 ## Institution('NAU')
8 ##ENDDESCRIPTION
9
10 # File Created: 8/9/05
11 # Location: Northern Arizona University
12 # Course: Prcalculus
13
14 DOCUMENT();        # This should be the first executable line in the problem.
16 "PGbasicmacros.pl",
17 "PGchoicemacros.pl",
19 "PGauxiliaryFunctions.pl",
20 "PGasu.pl",
22 );
23
24 TEXT(&beginproblem);
25
26 $showPartialCorrectAnswers = 1; 27 28$n=random(2,5,1);
29
30 do {
31 $d=random(2,5,1); 32$divisor=gcd($n,$d);
33 } until ($divisor==1); 34 35$e=random(2,4,1);
36
37 $N=($n)**($e); 38$D=($d)**($e);
39
40 $ans1=$e;
41 $ans2=-$e;
42
43 BEGIN_TEXT
44 Solve the given equations for $$x$$.
45
46 $PAR 47 $$(\frac{n}{d})^x = \frac{N}{D}$$ 48$BR
49 $$x =$$ \{ans_rule(20) \}
50 $PAR 51$PAR
52 $$(\frac{n}{d})^x = \frac{D}{N}$$
53 $BR 54 $$x =$$ \{ans_rule(20) \} 55 56 END_TEXT 57 58 &ANS(std_num_cmp($ans1));
59 &ANS(std_num_cmp(\$ans2));
60
61 ENDDOCUMENT();