(8+j8)*I2=j4*I1 (1)j2*I1-j4*I2=U (2)由(1)，I2=I1/(2-j2)，代入（2）得(1+j1)*I1=UI1*√2∠45°=UI1=10/√2∠-45° I2=I1/(2√2∠-45°)=2.5∠0°i1(t)=10*cos(t-45)i2(t)=2.5*√2*cos(t)
