Construct root locus manually with graphs.
Q9. The open-loop transfer function, G(s), of a system in the forward path of a unity negative feedback control system is K(S + 2) / S(S + 2).
(a) Construct the Root-locus diagram using MATLAB.
(b) Construct the root-locus diagram manually and show that the loci of complex closed-loop poles are part of a circle with (-1, 0) as the center and a radius of √2.