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Plotting the frequencies of a signal

Ok, for those who are begging like me, the fft of Matlab is equivalent in Wolfram to

Fourier[list,FourierParameters->{1,-1}]

this is because the Mathematica model used by Mathematica and MatLab are different, the difference is the normalization of Fourier DiscreteTransform used, the link below has more information about this, good luck.

https://math.stackexchange.com/questions/3233050/fft-from-scilab-is-different-than-wolfram-alpha

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