Command Reference : Function Reference : Function Reference: D
  
 
@digamma
First derivative of the natural log gamma function.
Syntax: @digamma(x)
x: number
Return: number
Computes the derivative of the log of the gamma function:
for .
Examples
= @digamma(1)
returns -0.57721....
Cross-references
See also @gammalog, @trigamma, and @psi.