Hallo all,(adsbygoogle = window.adsbygoogle || []).push({});

i have a problem with fourier analysis and i really hope yoou can help me in this forum. i have been trying to find the reason for my problem since many weeks but i could not.

Well, i have this Equation:s(t) = (1/(4*(Pi*t)^(3/2))) * Exp[-3)/(4*t)]

and i need to find the fourier Frequency for this funtion and then find the magnitude.

my solution:

i used the software mathematica to do it, so i could plot the function s(t) and then its magnitude using as it is shown in the attached images:

Plot[FourierTransform[(1/(4*(Pi*t)^(3/2)))*Exp[-(3)/(4*t)], t,f] // Abs, {f, 0, 100}]

but the problem that the plot of magnitude should look different. it should look like lowpass filter. i mean, that the frequencies should have high amplitude at the begining and then they should have lower and lower amplitude.

or maybe i have made something wrong in mathematica which led to this weird result. i hope u can help me

regards

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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# Homework Help: Problem with fourier analysis

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