How can I get the DFT of this function?

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Omar Esau Pacheco Saavedra
Omar Esau Pacheco Saavedra el 1 de Abr. de 2020
Respondida: Nikhil Sonavane el 6 de Abr. de 2020
How can I get the DFT of this function?
at 3, 7, 16, 128 points and save the results in vectors.
sorry if my question is silly, but i dont have schoolbecause covid 19
x(n) = u(n) − u(n − 4).

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Nikhil Sonavane
Nikhil Sonavane el 6 de Abr. de 2020
You may refer to the following code and make changes as per your requirements-
n = 512;
x=[1 1 1 1];
y = fft(x,n);
m = abs(y);
f = (0:length(y)-1)*100/length(y);
You may also refer to the documentation of fft.

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