Re: Trigonometric simplification - newbe question
- To: mathgroup at smc.vnet.net
- Subject: [mg49014] Re: [mg49004] Trigonometric simplification - newbe question
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Tue, 29 Jun 2004 04:49:41 -0400 (EDT)
- Reply-to: hanlonr at cox.net
- Sender: owner-wri-mathgroup at wolfram.com
Simplify[
(4*(2*a*Sin[(n*Pi)/2] - a*Sin[n*Pi]))/(n^2*Pi^2),
Element[n, Integers]]
(8*a*Sin[(n*Pi)/2])/(n^2*Pi^2)
Bob Hanlon
>
> From: fedderwi at uni-bremen.de (Christensen)
To: mathgroup at smc.vnet.net
> Date: 2004/06/28 Mon AM 04:13:48 EDT
> To: mathgroup at smc.vnet.net
> Subject: [mg49014] [mg49004] Trigonometric simplification - newbe question
>
> Hi,
>
> this is a Mathematica newbe question for sure:
>
> Mathematica comes up with the following result:
>
> (4*(2*a*Sin[(n*Pi)/2] - a*Sin[n*Pi]))/(n^2*Pi^2)
>
> Now I have the additional assumption that n is element of
> {1,2,3, ...) (and a is real)
>
> How do I tell Mathematica to take this into consideration and
> remove the Sin[n*Pi] term?
>
> Thanks,
> Walter
>
> Trigonometric simplification - newbe question
>
>