Re: how to extract coefficients of non-cosine term?
- To: mathgroup at smc.vnet.net
- Subject: [mg108118] Re: [mg108047] how to extract coefficients of non-cosine term?
- From: "Christoph Lhotka" <christoph.lhotka at univie.ac.at>
- Date: Mon, 8 Mar 2010 06:18:03 -0500 (EST)
- References: <201003070904.EAA01044@smc.vnet.net>
hello, if I understood right, and you want the non-zero average contributions of a generic Fourier series, try out accordingly: fseries /. Cos[__]|Sin[__]|Exp[__]->0 (delete the cosine terms) will return the non zero average terms. On So, 7.03.2010, 10:04, Ruida wrote: > Hi guys, > > I expanded an expression which end up with a lot cosine term, such as > Cos[w t],Cos[2w t], Cos[3w t].... > > My question is how to extract coefficient for non-cosine terms? > I did my research with Google but couldn't find a solution. > > Thanks a lot! > > > -- Mag. Christoph Lhotka University of Vienna / Institute for Astronomy Tuerkenschanzstrasse 17, A-1180 Vienna, Austria fon. +43 (1) 4277 51841 mail. lhotka at astro.univie.ac.at
- References:
- how to extract coefficients of non-cosine term?
- From: Ruida <coolradar@gmail.com>
- how to extract coefficients of non-cosine term?