Determine whether or not each of the following discrete-time signals is periodic. If the signal is periodic, determine its fundamental period. (a) x[n] = sin( 6; n + 1) (b) x[n] = cos(~ – 7T) (c) x[n] = cos(in2) (d) x[n] = cos(~n)cos(*n) (e) x[n] = 2cos(*n) +

Determine whether or not each of the following discrete-time signals is periodic. If the signal is periodic, determine its fundamental period. (a) x[n] = sin( 6; n + 1) (b) x[n] = cos(~ – 7T) (c) x[n] = cos(in2) (d) x[n] = cos(~n)cos(*n) (e) x[n] = 2cos(*n) +sin( in)- 2cos(~n + i)

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