Electrical Engineering > GATE 2017 SET-2 > LTI Systems
A cascade system having the impulse responses h1(n) = {1, -1} and h2(n) = {1, 1} is shown in the figure below, where symbol ↑ denotes the time origin.
The input sequence x(n) for which the cascade system produces an output sequence y(n) = {1, 2, 1, -1, -2, -1} is
Correct : d
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