Dear Raul and J Forum: I was aware of the D. operator, and admire the solution. My only question is how accurately D. performs numerical differentiation. Can I rely on it, or should I seek numerical methods for deriving the gamma functions? Thanks. Sincerely, Leigh
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Raul Miller Sent: Tuesday, May 08, 2007 2:56 PM To: Programming forum Subject: Re: [Jprogramming] Digamma function On 5/8/07, I wrote: > digamma=: [EMAIL PROTECTED]@<:D.1 > trigamma=: [EMAIL PROTECTED]@<:D.2 > tetragamma=: [EMAIL PROTECTED]@<:D.3 Er.. I meant: digamma=: [EMAIL PROTECTED]@<:D.1 trigamma=: [EMAIL PROTECTED]@<:D.2 tetragamma=: [EMAIL PROTECTED]@<:D.3 I don't know why I typed @. when I meant @ but that's a rather unpleasant mistake. -- Raul ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
