A heat exchanger has the following transfer function model: Gp(s)=15s+13e6s,Gd(s)=10s+12e9s with GV=Gm=Gt=1. (a) Design a feedforward controller based on a steady-state analysis. (b) Design a feedforward controller based on a dynamic analysis. (c) Design a PI feedback controller based on the ITAE method for PI disturbance case. (d) Simulate the closed-loop response to a unit step change in the disturbance variable using feedforward control only and the controllers of parts (a) and (b). Does the dynamic controller of part (b) provide a significant improvement? (e) Repeat part (d) for the feedforward-feedback control scheme and the controllers of parts (a) and (c), as well as (b) and (c). (f) Which control configuration provides the best control