Fourier Transform



Hello all,

I am new to maxima and I am very impressed by its capabilities. 

The particular problem I am trying to solve at the moment needs some
manipulation of Fourier transforms. I have seen that FFT and Fourier
series are available within Maxima. I have read through the "Maxima
Manual" and "The Maxima Book" but I can't find a way to do this.

Is there a general way to perform integral transforms? Or I do I have to
"define" them myself? Something like:

FT:F(w):=integrate(f(t)*exp(-%i*2*%pi*w*t),t,-INF,INF);
ev(FT,f(t):=sin(t*t));

doesn't seem to work.

Actually, I would like to work with FT, but also other kinds of integral
transforms, like time-frequency, or convolution products.

Thanks for your help.

-- 
Jordi Inglada
CNES - Centre Spatial de Toulouse
DSO/OT/QTIS/VP - BPI 811
18, avenue Edouard Belin
31401 Toulouse Cedex 04 - France
Tel. +33.(0)5.61.27.33.97 - Fax. +33.(0)5.61.27.31.67
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