// Example 2.28 page no-86
clear
clc
Vt=0.026
Nv=(3/4)*Vt*log(3)
printf("\nFor Intrinsic Semiconductor,\nEF will be at the centre of the forbidden band. \nBut if mp and mn are unequal, EF will be away\nfrom the centre of the forbidden band by\n\nNv=%.1f*10^-3 eV",Nv*10^3)