hp40g+.book Page 13 Friday, December 9, 2005 1:03 AM
| Factorial of a positive integer. For |
| 1). This calculates the gamma function. |
| value! |
PERM | Number of permutations (with regard to order) of n things |
| taken r at a time: |
| PERM (n, r) |
| Example |
| PERM(5,2) returns 20. That is, there are 20 |
| different permutations of five things taken two at a |
| time. |
RANDOM | Random number (between zero and 1). Produced by a |
| |
| the RANDOM function uses a seed number to begin its |
| sequence. To ensure that two calculators must produce |
| different results for the RANDOM function, use the |
| RANDSEED function to seed different starting values |
| before using RANDOM to produce the numbers. |
| RANDOM |
H I N T |
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The setting of Time will be different for each calculator, so | |
| using RANDSEED(Time) is guaranteed to produce a set of |
| numbers which are as close to random as possible. You |
| can set the seed using the command RANDSEED. |
UTPC | |
| freedom, evaluated at value. Returns the probability that |
| a χ2 random variable is greater than value. |
| UTPC(degrees, value) |
UTPF | |
| degrees of freedom and denominator degrees of freedom |
| (of the F distribution), evaluated at value. Returns the |
| probability that a Snedecor's F random variable is |
| greater than value. |
| UTPF(numerator, denominator, value) |
UTPN | |
| evaluated at value. Returns the probability that a normal |
| random variable is greater than value for a normal |
| distribution. Note: The variance is the square of the |
| standard deviation. |
| UTPN(mean, variance, value) |
Using mathematical functions |
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