uc(t)=11-10e.sy 12 1Ω 1Ω 0-路=54 uc (t)=1×1+1×ic+4c=12-5e.syu t e V t C 0 . 5 ( ) 11 10 − = − e A dt du i t C t C 0 . 5 ( ) 5 − = = +– 10V 1A1 +－u C 1  +－ u 1  u t i u e V t C C 0.5 ( ) 1 1 1 12 5 − =  +  + = −