Question: Given , x 1 [ k ] = k ( u [ k ] - u [ k - 4 ] ) and x 2

Given ,x1[k]=k(u[k]-u[k-4]) and x2[k]=2(u[k-1]-u[k-4]), determine
(1)y[k]=x1[k]**x2[k]
(2) the discrete-time Fourier transform of y[k].
Given , x 1 [ k ] = k ( u [ k ] - u [ k - 4 ] )

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