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I have given a feedback system in z domain like: y = 2*w2 + e w2 = z^-1/(1-z^-1) * (w1 + (1-z^-1)*w2 - 1/2*(1-z^-1)*y) w1 = v - y + z^-1/(1-z^-1) * 1/2 * (v - y) where y is the system output, v is the system input, w1 and w2 are...