- #1
asdf12312
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Homework Statement
Given x[n] with transform X(ejw), find the Fourier transform in terms of X(ejw).
x1[n]=[0.9ncos(0.6*pi*n)] * x[n-2]
Homework Equations
time shift: x[n-k] -> e-jwkX(ejw)
convolution: x[n] * h[n] -> X(w)H(w)
freq. shift: x[n]ejwcn -> X(ew-wc)
The Attempt at a Solution
I think that this problem has no solution because 0.9n has no Fourier transform (not summable). 0.9nu[n] on the other hand does but not the same case here. am i doing this right?
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