For the system shown in Fig. P 4.9, establish relation between ' \(k\) ' and ' \(a\) ' so that system is stable and show stable region on a plane with ' \(k\) ' on \(y\) axis and ' \(a\) ' on \(x\) axis.

Transcribed Image Text:

R(s) s+a S k (s+2) 2 8. 1 1 -O Y(s)