Determine the system type for following unity feedback systems whose forward path transfer functions are given below.

(a) K G(s) = (1 + s)(l + lOs)(l + 20s)

{b) G(s) _ lO(s + 1)

- s3 (s2 +5s+5)

{c) G(s) _ 100 - s3 (s + 2) 2 Problem