Re: [Gretl-devel] Digamma function: possible mistake

On Fri, 4 Nov 2016, Henrique Andrade wrote: Dear Allin and Jack, > > I think there is an error in the definition of the digamma function in > Gretl Command Reference. > > Now we have: > > <tex> > \psi(x) = d\Gamma(x)/dx > <\tex> > > And I think it should be: > > <tex> > \psi(x) = d\Gamma'(x)/dx > <\tex> > The ways I'm seeing it as written are \psi(x) = d/dx ln \Gamma(x) or \psi(x) = \Gamma'(x) / \Gamma(x) I've put the first of these into the TeX doc. Allin _______________________________________________ Gretl-devel mailing list Gretl-devel(a)lists.wfu.edu http://lists.wfu.edu/mailman/listinfo/gretl-devel