Official PYQ · 2005Set 1 · Q21Discrete-time SignalsMCQ1 mark

GATE EC 2005 Set 1 Q21 — Discrete-time Signals

Let $x(n)=\left(\frac{1}{2}\right)^{n} u(n), y(n)=x^{2}(n)$ and $\mathrm{Y}\left(e^{j i e}\right)$ be the Fourier transform of $y(n)$ . Then $Y\left(e^{j i e}\right)$ is

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Published 10 Oct 2026

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GATE EC 2005 Set 1 Q21 — Discrete-time Signals

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