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Determine, with reasons, whether the following signals are periodic or not? If periodic, find the fundamental period. n(+1) n (i) x(n) = cos- +

Determine, with reasons, whether the following signals are periodic or not? If periodic, find the fundamental period. n(+1) n (i) x(n) = cos- + sin 9 (ii) cos 2t + sin 2 nt

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