Q2) Consider a discrete-time system which has input of signal x[n] and output of y[n]=4 cos (x/4 x[n] ). a) Evaluate and draw the impulse response of the above system. b) If the input to the system is...

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Extracted text: Q2) Consider a discrete-time system which has input of signal x[n] and output of y[n]=4 cos (x/4 x[n] ). a) Evaluate and draw the impulse response of the above system. b) If the input to the system is x[n]-n/2, determine whether the output of the system yfn] is periodic. If y[n] is periodic, find its fundamental period and fundamental frequency.