Consider the discrete-time LTI system shown below with h(n) = ()u(n). (a) Determine the system response y(n) when we apply input x(n) = u(n+4) - u(n − 8), using the properties of convolution. - (b) Find the impulse response of the entire system. x(n) Z -2 h(n) h(n) y(n)

Q: b) y[n]+ 1.2y[n-1] =2x[n-1] + x[n-3]

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