Question: Find the period of the following signals: (a) z(t) = 2cos (4t++) 3 (b) x(t) = e(t-1) (c) x (t) = cos2t -) 3

Find the period of the following signals: (a) z(t) = 2cos (4t++) 3 (b) x(t) = e(t-1) (c) x (t) = cos2t -) 3 

Find the period of the following signals: (a) z(t) = 2cos (4t++) 3 (b) x(t) = e(t-1) (c) x (t) = cos2t -) 3

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