P7.14 The loop transfer function of a unity feedback system is

- K(s2 2s+4) L(s)=G(s)G(s)= s(s+4)(s+6) This system is called conditionally stable because it is stable only for a range of the gain K such that k < K < k2. Using the Routh-Hurwitz criteria and the root locus method, determine the range of the gain for which the system is stable. Sketch the root locus for 0 < K < 0.