3. Consider the causal, discrete-time LTI system described by the difference equation: yln) + yin- 1)-yin- 2) =x(n-1] y[n– 1] a) Determine the frequency response H(N) of the system. b) Determine the...

Extracted text: 3. Consider the causal, discrete-time LTI system described by the difference equation: yln) + yin- 1)-yin- 2) =x(n-1] y[n– 1] a) Determine the frequency response H(N) of the system. b) Determine the impulse response h[n]. c) Find the impulse response of the inverse system h(n] that satisfies H(Q) H'M) = 1. Is the inverse system causal? d) Determine the output y[n] when x[n] = (})"-'u[n–1] + 8[n].