Problem 3 (10 points). Find rise time, peak time, maximum overshoot, and set- tling time in the unit-step response of a closed-loop system described by the following closed-loop transfer function: G(s) 64 s² + 4s + 64 Problem 4 (10 points). Consider a unity-feedback control system whose open- loop transfer function is Gal(s): s(s+1) Obtain the rise time tr, peak time tp, maximum overshoot Mp, and settling time t of the system response to the unit-step input. Hint 1: You will need to find, first, the transfer function of the closed-loop system, Ga(s), and you will discover that it represents a second order system. Hint 2: Then, you will need to find wn and E, which are essential to compute the required time performance specifications.