i(04)=-2A 2=3A R R1=R=22 L 4 2S R.2 得i1=3+(-2-3)e2A=3-5eAt20 闪四 西南交通大学西南交通大学 \i L (0+ ) = -2A I A R U i s s Lp 2 3 2 10 = - = - = Rab = R = 2W s R L ab 2 2 4 \t = = = 得 3 ( 2 3) 3 5 0 2 05 1 = + - - = - ³ - - i e A e A t t t L