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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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