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| Functions and CALL Routines |
TRIGAMMA Function
Returns the value of the trigamma function.
| Category: | Mathematical |
| Syntax | |
| Arguments | |
| Details | |
| Examples |
Syntax |
| TRIGAMMA(argument) |
Arguments
- argument
-
specifies a numeric constant, variable, or expression.
Restriction: Nonpositive integers are invalid.
| Details |
The TRIGAMMA function returns the derivative of the DIGAMMA function. For argument > 0, the TRIGAMMA function is the second derivative of the LGAMMA function.
| Examples |
| SAS Statements | Results |
|---|---|
x=trigamma(3); |
0.3949340668 |
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Copyright © 2011 by SAS Institute Inc., Cary, NC, USA. All rights reserved.