Re: Series problem
- To: mathgroup at smc.vnet.net
- Subject: [mg4109] Re: Series problem
- From: Gennady <stupakov at slac.stanford.edu>
- Date: Tue, 4 Jun 1996 02:19:56 -0400
- Organization: SLAC
- Sender: owner-wri-mathgroup at wolfram.com
In article <4ojdna$5i8 at dragonfly.wolfram.com> Tommy Nordgren,
f85-tno at telesto.nada.kth.se writes:
>Cos[b x] Exp[-x^2]/(k^2+x^2) into a taylor series around 0.
Here is a solution to your problem:
In[4]:=
approx={Cos[b x]->Series[Cos[b x],{x,0,3}]//Normal}
Out[4]=
2 2
b x
{Cos[b x] -> 1 - -----}
2
In[5]:=
Cos[b x] Exp[-x^2]/(k^2+x^2)/.approx
Out[5]=
2 2
b x
1 - -----
2
-------------
2
x 2 2
E (k + x )
Regards,
Gennady
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