Re: FFT in Mathematica
- To: mathgroup at smc.vnet.net
- Subject: [mg93688] Re: FFT in Mathematica
- From: Oliver <sch_oliver2000 at yahoo.de>
- Date: Sat, 22 Nov 2008 06:10:28 -0500 (EST)
Thanks a lot for ur very useful suggestions.
well sorry for saying "FFT" but i actually meant the fourier Transform in analytical way and not in nummeric way.
i plotted the FourierTransform of the function according to this:
Plot[FourierTransform[(1/(4*(Pi*1*t)^(3/2)))*Exp[-(3)/(4*1*t)], t,
f] // Abs, {f, 0, 100}]
but i actually got a very weird plot which does not make sense for the frequency.It produces a function in exponential behave.
where should be the mistake??!
maybe in the solution of the FourierTransform i got? :
((-1 + Sign[f]) Sinh[
Sqrt[Abs[f]] Root[9 + #1^4 &, 4]])/(2 Sqrt[6] \[Pi]^(3/2))
Thanks in Advance