Solution 3.8.2.4 Let Z 1 = R 1 + 1 C 1 s = R 1 C 1 s +1 C 1 s : and Z 2 = 1 C 2 s and Then V o (s)=  Z 2 Z 1 + Z 2  V i ;; Thus V o (s) V i (s) = 1 C 2 s 1 C 2 s + R 1 C 1 s+1 C 1 s (C 1 s)(C 2 s) (C 1 s)(C 2 s) = C 1 s (C 1 s)+(C 2 s)(R 1 C 1 s +1) = C 1 s (R 1 C 1 C 2 )s 2 +(C 1 + C 2 )s = C 1 s (R 1 C 1 C 2 )s(s + (C 1 +C 2 ) R 1 C 1 C 2 ) = 1 R 1 C 2 1 (s + (C 1 +C 2 ) R 1 C 1 C 2 ) : 1