E5.4 A feedback system with negative unity feedback has a loop transfer function

L(s) = G(s)G(s) = 2(s+8) s(s+4) (a) Determine the closed-loop transfer function T(s) Y(s)/R(s). (b) Find the time response, y(t), for a step input r(t)= A for t>0. (c) Determine the percent overshoot of the response. (d) Using the final-value theorem, determine the steady-state value of y(t).