Sketch Root Locus using MATLAB for the following negative unity feedback systems and determine the range of K for stability. Also determine the gain K that will give you a Settling time = 2 sec G(s) = K(s + 2)/s (s+3)(s+4)(s+5) G(s) = K(s-2) (s-4)/(s+4)(s+5) G(s) = K(s^2-5s+25)/(s+3)(s+5)