Consider the unity feedback system shown in Figure E4.14. The

Consider the unity feedback system shown in Figure E4.14. The system has two parameters, the controller gain K and the constant K1 in the process.
(a) Calculate the sensitivity of the closed-loop transfer function to changes in K1.
(b) How would you select a value for K to minimize the effects of external disturbances, Td(s)?
Figure E4.14
Closed-loop feedback system with two parameters, K and K1.
Consider the unity feedback system shown in Figure E4.14. The