//chapter 14
//example 14.5
//page 605
printf("\n")
printf("given")
Ib=500*10^-9;Vi=50*10^-3;Vo=2;
I2=100*Ib;
R3=Vi/I2
R2=(Vo/I2)-R3
R1=(R2*R3)/(R2+R3)