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Re: FoourierTransform of a function defined in sections

• To: mathgroup at smc.vnet.net
• Subject: [mg70185] Re: FoourierTransform of a function defined in sections
• From: "Jens-Peer Kuska" <kuska at informatik.uni-leipzig.de>
• Date: Sat, 7 Oct 2006 07:06:53 -0400 (EDT)
• Organization: Uni Leipzig
• References: <eg4soa$ffu$1@smc.vnet.net>

Hi,

FourierTransform[Sin[x]^2*Boole[Abs[x] < Pi], x, 
p]

??

And pi is Pi and *not* PI in Mathematica

Regards

  Jens

"Eckhard Schlemm" <e.schlemm at hotmail.de> schrieb 
im Newsbeitrag news:eg4soa$ffu$1 at smc.vnet.net...
| Hello,
|
| I want Mathematica to calculate the 
FourierTransform of a function which is
| defined by Sin[x]^2 for Abs[x]<PI and zero else. 
I tried and defined the
| function g as follows:
|
| g[x_]:=If[Abs[x]>PI,0,Sin[x]^2];
|
| That works fine. But if I have mathematica try 
to determine the
| FourierTransform by
|
| FourierTransform[g[x],x,p]
|
| I always get the error that the recursion limit 
and the iteration limit were
| exceeded...
|
| what am I'm doing wrong?
|
| Any help is appreciated
|
| thanks
|
| Eckhard
|
| --
| _________________________
| Ludwig Schlemm
| Tel: +49 (0) 160 91617114
| LudwigSchlemm at hotmail.com
|
|