[R] Trigamma function
Roger Peng
rpeng at stat.ucla.edu
Thu Oct 17 07:41:10 CEST 2002
Yes, the function is called 'trigamma'. Try
?trigamma
-roger
_______________________________
UCLA Department of Statistics
rpeng at stat.ucla.edu
http://www.stat.ucla.edu/~rpeng
On Wed, 16 Oct 2002, Feng Zhang wrote:
> Hey, all
>
> Do you how to calculate the trigamma function, that is
> d**2(log(gamma(x))) / dx**2.
> The second-order derivative of log(Gamma(x))?
>
> I cannot find it in the R package, and somebody knows who or where to get
> such one?
>
> Thanks.
>
> Fred
>
>
>
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