CP5.12 A closed-loop transfer function is given by T(s)=R(s)Y(s)=(s+7)(s2+4s+22)77(s+2). (a) Obtain the response of the closed-loop transfer function T(s)=Y(s)/R(s) to a unit step input. What is the settling time Ts (use a 2% criterion) and percent overshoot P.O.? (b) Neglecting the real pole at s=7, determine the settling time Ts and percent overshoot P.O.. Compare the results with the actual system response in part (a). What conclusions can be made regarding neglecting the pole