自动控制原理（双语教学）：3.8.3.5

Solution 3.8.3.5 Let Z 1 = R 1 + 1 C 1 s = R 1 C 1 s +1 C 1 s ;; and Z 2 = R 2 C 2 s R 2 + 1 C 2 s = R 2 R 2 C 2 s +1 : Then Z 2 Z 1 = R 2 R 2 C 2 s +1 R 1 C 1 s +1 C 1 s   (C 1 s)(R 2 C 2 s +1) (C 1 s)(R 2 C 2 s +1)  = R 2 C 1 s (R 1 C 1 s +1)(R 2 C 2 s +1) = (1=R 1 C 2 )s (s +1=R 1 C 1 )(s +1=R 2 C 2 ) : Wenexthavetochoose some values. Weknow that C 1 C 2 = 10 1 R 1 C 1 = 5 Let R 1 = 100 k R 2 = 1:0M C 1 = 10  f C 2 = 1  f: 1