Problem 5 [2 Let r[n] be a sequence such that X(w) is real and nonzero for all w. Let yn] = rn-1] and !! z[n] = r{n-2]. Show that Y(w) and Z(w) cannot be real except at certain frequencies w that you have to specify.

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Problem 5 (2
Let rn] be a sequence such that X(w) is real and nonzero for all w. Let yn] = r[n-1] and
z[n] = x{n-2]. Show that Y(w) and Z(w) cannot be real except at certain frequencies w that
you have to specify.
Transcribed Image Text:Problem 5 (2 Let rn] be a sequence such that X(w) is real and nonzero for all w. Let yn] = r[n-1] and z[n] = x{n-2]. Show that Y(w) and Z(w) cannot be real except at certain frequencies w that you have to specify.
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