Drexel dragonThe Math ForumDonate to the Math Forum



Search All of the Math Forum:

Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.


Math Forum » Discussions » sci.math.* » sci.math

Topic: Help with identity
Replies: 15   Last Post: May 9, 2013 7:13 AM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
Virgil

Posts: 8,833
Registered: 1/6/11
Re: Help with identity
Posted: May 8, 2013 2:45 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

In article <v4sjo8hvdpgibvjlqa3chup5qo4e1at44b@4ax.com>,
AP <marc.pichereau@wanadoo.fr.invalid> 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)]



sinh(x)/(cosh(x) - cos(y) =

should be

sinh(x)/(cosh(x) - cos(y) ) =
--





Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© Drexel University 1994-2014. All Rights Reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.