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== Questions == | == Questions == | ||
Revision as of 16:35, 1 October 2008
Questions
$ Y(t) = x(t - 1) - x(1 - t) $
It is Time Invariant? Justify.
Answer
No.
$ S_1 = Y(t) = x(t - 1) - x(1 - t) $
$ S_2 = Y(t) = x(t - t_o) $
$ x(t) -> S1 -> S2 -> x(t - t_o - 1) - x(1 - t + t_o) $
$ x(t) -> S2 -> S1 -> x(t - t_o - 1) - x(1 - t - t_o) $
$ x(t - t_o - 1) - x(1 - t + t_o) =/= x(t - t_o - 1) - x(1 - t - t_o) $
