Hi,

I want to do fast fourier transform (using matlab) of the following functions

a) step function.i.e

f(t) = 0.0 if t<0

f(t) = F0 if t>=0

and

b) step function with exponential decay parameter

g(t) = 0.0 if t<0

g(t) = F0*exp(-at) if t>=0

Here the time domain is from (-infinity to +infinity)

The obtained results would be compared with continuous fourier transform
results.

Pl. could u help to do the above.

Thanks.

Regards

shiva