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Revision as of 18:31, 9 September 2008
Time Invariant.
A system is time-invariant as long as the system show certain fixed behaviors over time. For example, when x(t) shifts by a constant, y(t) should shift by the same constant.
$ y = x(t) $
$ x2 = x(t-t0) $
Then
$ y(t-t0) = x(t-t0) $
