initial commit / add all books

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+// Exa 1.25

+clc;

+clear;

+close;

+format('v',5)

+// Given data

+Nd = 10^18;

+R = 10;// in ohm

+A =10^-6;// in cm^2

+L = 10;// in mm

+L = L * 10^-4;// in cm

+miu_n = 800;// in cm^2/V-s

+q = 1.6*10^-19;// in C

+//Formula used, n = L/(q*miu_n*A*R)

+n = L/(q*miu_n*A*R);// in cm^-3

+// The percentage doping efficiency 

+doping = (n/Nd)*100;// % doping efficiency in %

+disp(doping,"The percentage doping efficiency in % is");