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## Main Question or Discussion Point

Hi, I hope someone could help me, I have been trying to solve this problem with FFT in matlab, why?, because my teacher gave it as homework. The problem is the following.

Obtain the value of the following integer using FFT:

the integer goes from [-infinte, infinite], and the function is x^2*exp(-x^2)*dx

He told us to check the definition of the fourier transform and I checked in books, matlab everywhere and I cant find any info that could help me, I hope someone here can, THANK YOU.

Obtain the value of the following integer using FFT:

the integer goes from [-infinte, infinite], and the function is x^2*exp(-x^2)*dx

He told us to check the definition of the fourier transform and I checked in books, matlab everywhere and I cant find any info that could help me, I hope someone here can, THANK YOU.