Show that: (a) A relaxed linear system is causal if and only if for any input x(n)

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Show that:
(a) A relaxed linear system is causal if and only if for any input x(n) such that
x(n) = 0 for n < n0 → y(n) = 0 for n< n0
(b) A relaxed LTI system is causal if and only if
h(n) = 0 for n < 0
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Digital Signal Processing

ISBN: ?978-0133737622

3rd Edition

Authors: Jonh G. Proakis, Dimitris G.Manolakis

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