Let the open loop transfer function of a positive feedback closed loop system be K(s−3)/(s^2+3s+2), where K is a non-negative real valued parameter. Consider the corresponding locus of closed loop poles. Which one of the following statements is TRUE? a)The region (-∞, -2) lies on the root locus b)The region (-∞, -1) lies on the root locus c) The region (-2, -1) lies on the root locus d) The region (-1, 3) lies on the root locus
I drew the root locus of the transfer function but there are two region on real axis (-infinity,-2) and (-1,3) . But only one option is correct. What option should I choose?