11.5 A control system has the following transfer functions in its block diagram (see Fig. 11.8): GC=1,GV=2, Gd=Gp=s(s+4)2,Gm=1. For a unit step change in Ysp, determine a. Y(s)/Ysp(s) b. y() c. Offset (note proportional control is being used) d. y(0.5) e. if the closed-loop response is oscillatory