A causal discrete-time lti system is described by y


A causal discrete-time LTI system is described by y [n] fr [- 1] + y [n - 2] x [n] where  x [n]  and y [n] are the input and output  of  the system, respectively.

(a) Determine the frequency response H(fl) of  the system.

(b) Find the impulse response h[n] of the system.

(c) Find y [n] if x [n] q)nu[n].

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Mechanical Engineering: A causal discrete-time lti system is described by y
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