Let x[n] be a periodic signal with fundamental period N and Fourier series coefficients In this problem, we derive the time-scaling property
listed in Table 3.2.
(a) Show that
(b) Show that if
Then
(c) Assuming that verify that
That is, one complex exponential in x[n] becomes a linear combination of m complex exponentials in
(d) Using the results of parts (a), (b), and (c), show that if x[n] has the Fourier coefficients
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