(b) The 4 pint DFT of a real sequence $x[n]$ is $X[K]=[1, j, 1,-j]$. Find DFT of the following sequences by using the properties of DFT
Explanation
The DFT of the sequence $x[n]$ is $X[K] = [1, j, 1, -j]$. We can find the DFT of the sequences $x[n] = (-1)^n imes n$ and $x[n] = x((n+1) \mod 4)$ using the properties of DFT.
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