0.002(200+R2)=0.998R1,(1)
200*0.002=(R1+R2)0.098(2)
(1)*100-----400+2R2=998R1(3)
(2)*100-----400=98R1+98R2(4)
把4代入3,得:100R2+98R2=998R1----->R2=9R1
0.002(200+R2)=0.998R1,(1)
200*0.002=(R1+R2)0.098(2)
(1)*100-----400+2R2=998R1(3)
(2)*100-----400=98R1+98R2(4)
把4代入3,得:100R2+98R2=998R1----->R2=9R1