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Which of the following systems is memory less?

Posted: Thu Jul 14, 2022 11:05 am
by answerhappygod
a) y(t) = 2x(t) + d⁄dx x(t)
b) y(t) = 2x2 (t) + d⁄dx x(t)
c) y(t) = ∫x(t)dt
d) y(t) = 2x2 (t)