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: residue at z=0 for sinh(z)*cosh(1/z) ?
Replies: 1   Last Post: May 4, 2013 10:21 AM

Advanced Search

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

Posts: 297
Registered: 5/29/08
Re: residue at z=0 for sinh(z)*cosh(1/z) ?
Posted: May 4, 2013 10:21 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

On 04/05/2013 15:09, Brad Cooper wrote:
> Puzzled by this...
>
> residue at z=0 for sinh(z)*cosh(1/z) ?
>
> Cannot obtain Laurent series.


You only need one term...

> Nothing else works either.

I get sum_{n=1}^infinity 1/((2n-1)!(2n)!).




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.