Part (a): By reducing the given block diagram and showing your work, find the closed-loop transfer function in terms of the given gains (i.e., C(s)/R(s)). Show your final answer in a form so that the transfer function would have a “1+…” term in the denominator. Part (b): Find C(s)IR(s) for a case in which G1 = 2, G2 = s, H1 = —s, and H2 = 1.