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2. (20 points) Determine whether or not each of the following signals is periodic. If the signal is periodic, determine its fundamental period. (a) 11:03)

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2. (20 points) Determine whether or not each of the following signals is periodic. If the signal is periodic, determine its fundamental period. (a) 11:03) = 634i cos(7rt/4) (b) (C(13) = siggwt) + cos(137rt) (c) 3:05) = 335: + em + git/3 (d) $03) = 63? + cos(2;t)

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