2. Consider the system shown ?n Figure.4, determine: a) The system function H(z); and b) The difference equation relating the output y[n] and input x[n] Solution H(z) = (b0 Z-1 + (b1+a1) z-1 +(b2 + a2)z0 ) /(a2x(n)+ a1x(n)) Difference equation = b0 Z-1 + (b1+a1) z-1 +(b2 + a2)z0.