7-3. Determine the step, ramp, and parabolic error constants of the following unity-feedback control systems. The forward-path transfer functions are given. (a) G(s)= 1000 (1+0.1s) (1+10s) 100 s(s² +10s+100) K s(1+0.1s) (1+0.5s) 100 (b) G(s)=- (c) G(s)= (d) G(s)= 1000 (e) G(s): s(s+10)(s+100) (f) G(s)= K(1+2s)(1+4s) S (s²+s+1) s² (s² +10s+100)