Functions and CALL Routines |
Category: | Mathematical |
Syntax | |
Arguments | |
Details | |
Examples |
Syntax |
TRIGAMMA(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 |
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x=trigamma(3); |
0.3949340668 |
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