Signals and Systems - ECE Questions and Answers

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Choose the function f(t), - ∞ < t < + ∞, for which a Fourier series cannot be defined

3 sin (25t)

4 cos (20t + 3) + 2 sin (10t)

exp - | t | sin 25 t

Answer : Option C

Explanation :

Fourier series is applicable for periodic or finite duration signal and (c) is neither periodic nor finite duration signal.

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