[npl] / trunk / NationalProblemLibrary / Rochester / setDerivatives14Hyperbolic / csuf_dr_14_01.pg Repository: Repository Listing bbplugincoursesdistsnplrochestersystemwww

# View of /trunk/NationalProblemLibrary/Rochester/setDerivatives14Hyperbolic/csuf_dr_14_01.pg

Fri Apr 28 13:46:21 2006 UTC (7 years, 1 month ago) by jjholt
File size: 886 byte(s)
```Added tags.  --JH
```

```    1 ## DESCRIPTION
2 ##   Derivative of a Hyperbolic Trigonometry Function
3 ## ENDDESCRIPTION
4
5 ## KEYWORDS('Derivative', 'Hyperbolic')
6 ## Tagged by nhamblet
7
8 ## DBsubject('Calculus')
9 ## DBchapter('Differentiation')
10 ## DBsection('Hyperbolic Functions')
11 ## Date('')
12 ## Author('')
13 ## Institution('Rochester')
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());
32
33 \$a = random(2,9,1);
34 \$deriv = "\$a * (sech(\$a*x))^2";
35
36 BEGIN_TEXT
37 If
38 \[ f(x) =  \tanh (\$a x)\]
39 then \( f'( x ) =\) \{ans_rule(50) \}.
40 \$BR
41 END_TEXT
42
43 ANS(fun_cmp(\$deriv));
44
45 ENDDOCUMENT();        # This should be the last executable line in the problem.
```