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a block diagram using multipliers, adders, and shifters that represents the system. b. Determine the characteristic equation. c. Determine the analytical form of the impulse response function, h[n] (hint: roots are complex). d. Plot h[n] in MATLAB for n=0,1, ..., 20. e. Is the system stable? Explain. f. Explain how you would go about calculating the total system response for an input of x[n] = u[n] (NOTE: do not perform any calculations, just set up the equation).

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