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matlab试题求解~急!在线等!

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matlab试题求解~急!在线等!
因为不想把分白白给百度,但是解出来就给100的悬赏!我发誓!
(a)Use the filter function to generate and plot the impulse response h[n] of the following
difference equation. Plot h(n) in the range of 0 ≤ n ≤ 100.
y[n] - 1.6 cos(π /8)y[n-1] + 0.64 y[n-2] = x[n] + 0.5 x[n-1]
(b) Determine the impulse response analytically and confirm your results.
(c) Verify that the transfer function of this system is rational (hint: compute the frequency
response H(e jω ) from the difference equation).
信号与系统的