6.29 For the following second-order transfer functions, determine Kp,n, and . a. Gr(s)=4s2+s+46 b. Gp(s)=5s2+10s+103 6.30 Tuning controllers such that the resulting dynamic response has a decay ratio of 1/4 has been proposed for some time. Assuming a second-order response for the feedback system, what value of corresponds to a decay ratio of 1/4 ? 6.31 Determine the decay ratio of a second-order process if the overshoot is 0.05