initial commit / add all books

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+clear;
+clc;
+disp('Example 1.2');
+
+
+
+//Given values
+P1 = 138;  // initial pressure,[kN/m^2]
+V1 = .112;  //initial volume,[m^3]
+P2 = 690; //  final pressure,[kN/m^2]
+Gama=1.4; //  heat capacity ratio
+
+//  solution
+
+//  since gas is following, PV^1.4=constant,hence
+
+V2 =V1*(P1/P2)^(1/Gama); //   final volume, [m^3] 
+
+mprintf('\n The new volume of the gas is = %f m^3\n',V2)
+
+//End