initial commit / add all books

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+//The value mentioned in the part 'c' of the question is 45MN^3 but that assumed in the solved problem is 50MN^3
+clear all; clc;
+disp("Ex 1_1")
+disp("Part a :-")
+a=10//magnitude of force 1 in mN
+a1=10*10^-3//magnitude of force 1 in N
+b=5//magnitude of force 2 in GN
+b1=5*10^9//magnitude of force 2 in N
+k1=a1*b1//answer in N^2
+k=k1/10^6//answer in kN^2
+printf('The answer is %g kN^2',k)
+disp("Part b :-")
+c=100//magnitude of length in mm
+c1=100*10^-3//magnitude of length in m
+d=0.5//magnitude of force in MN
+d1=0.5*10^6//magnitude of force in N
+l1=c1*d1^2//answer in mN^2
+l=l1/10^9//answer in GmN^2
+printf('The answer is %g GmN^2',l) 
+disp("Part c :-")
+e=50//magnitude of force in MN^3
+e1=50*10^6//magnitude of force in N^3
+f=500//magnitude of weight in Gg
+f1=500*10^6//magnitude of weight in kg
+m1=e1/f1//answer in N^3/kg
+m=m1*10^3//answer in kN^3/kg
+printf('The answer is %g kN^3/kg',m)