
Re: Help with identity
Posted:
May 9, 2013 7:13 AM


On Wed, 08 May 2013 08:29:45 +0200, AP <marc.pichereau@wanadoo.fr.invalid> wrote:
>On Thu, 25 Apr 2013 08:17:47 0400, Mike Trainor ><mtrainor@hotmail.com> wrote: > >> >> >>Would greatly appreciate any pointers to proving the following >>identity that I came across in Bateman's book on partial >>differential equations: >> >>sinh(x)/(cosh(x)  cos(y) = 1 + >> >> sum{n, 1, inf} [exp(nx)*cos(ny)] >not >1+2sum{n, 1, inf} [exp(nx)*cos(ny)] >?
You are right. Antoher typo!
mt

