Official PYQ · 2026Set 1 · Q48Continuous-time SignalsMSQ2 marks

GATE EC 2026 Set 1 Q48 — Continuous-time Signals

Let $x_{1}(t)=\cos (2 \pi n t)$ and $x_{2}(t)=2 \sin (4 \pi n t)$ represent two sinusoids for a positive integer $n$ and $-\infty < t < \infty$ .

Which of the following statements about $x_{1}(t)$ and $x_{2}(t)$ is/are valid?

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Answer: A;C;D

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Published 10 Oct 2026

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