Solution 3.8.2.5 Let Z 1 = R and Z 2 = 1 Cs : Then V o (s)=  Z 2 Z 1 + Z 2  V i ;; Thus V o (s) V i (s) = 1 Cs R+ 1 Cs Cs Cs = 1 RCs +1 = 1 RC 1 s + 1 RC : 1