E7.26 Consider the single-input, single-output system is described by

where x(t) = Ax(t) + Bu(t) y(t) = Cx(t) A = [3 K 0 1 K] B = [] C = [1 1]. 3-K-2-K Compute the characteristic polynomial and plot the root locus as 0 < K < . For what values of K is the system stable?