A periodic signal has the following Fourier series representation (a) Is x(t) band-limited? (b) Calculate the power
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(a) Is x(t) band-limited?
(b) Calculate the power Px of x(t).
(c) If we approximate x(t) as
by using 2N + 1 terms, find N so that xÌ(t)has 90% of Px.
(d) If we use N found above, determine the sampling period that can be used to sample xÌ(t) without aliasing.
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