ic2(O+)=i(O+)=0 (0)=-llc1(0)/3=-2A Z1(01)=Ll2(O)-c1(0)=0v L L ①a(0)3 l12(00) CI C2 0+图( 0 ) ( 0 ) ( 0 ) 0 V ( 0 ) ( 0 ) / 3 2 A ( 0 ) ( 0 ) 0 L C 2 C 1 C1 C1 C2 L = − = = − = −  = = + + + + + + + u u u i u i i +-u C 1(0 + ) 3 uC2 (0 + ) + u L - iC1 iC2 1+- 0 + 图