8. Consider the feedback control system block diagram in Figure 6.27. Investigate closed

1 for the two cases where loop stability for G(s) = K(s+1) and G(s)= K = 1 and K = 3. a. Unstable for K = 1 and stable for K = 3 b. Unstable for K = 1 and unstable for K = 3 c. Stable for K = 1 and unstable for K = 3 d. Stable for K = 1 and stable for K = 3 (s+2)(s-1)