initial commit / add all books

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diff --git a/2243/CH11/EX11.14/Ex11_14.sce b/2243/CH11/EX11.14/Ex11_14.sce
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+clc();

+clear;

+//Given :

+sigma = 4*10^-4; // conductivity at room temperature in ohm^-1 m^-1

+M = 28.1; // atomic weight in kg/kmole

+d = 2330; // density in kg/m^3

+dop = 10^8 ;// doping per 10^8 silicon atoms

+e = 1.6*10^-19; // charge of an electron in C

+mue = 0.135; // mobility of free electrons for silicon in m^2/Vs

+Na = 6.023*10^26 ; // Avagadro's constant in atoms/kmole

+N = (d*Na)/M; //atoms/m^3

+Nd = N/dop; // per m^3

+n = Nd; // electron concentration / m^3

+sigma1 = n*e*mue; // conductivity in ohm^-1 m^-1

+t = sigma1/sigma; // number of times the conductivity  increased

+printf("Conductivity increased %d times .",t);

+//Result obtained differs from that in textbook, because approximate value for sigma1 was considered.

diff --git a/2243/CH11/EX11.14/Res11_14.txt b/2243/CH11/EX11.14/Res11_14.txt
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+ Conductivity increased 26968 times .
\ No newline at end of file