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// Examle 3.20
// From the diagram (3.38) Apply KVL to all the 3 loop.
// Loop-1 19I1-12I2+0I3-= 60................(i
// Loop-2 -12I1+18I2-6I3= 0...............(ii
// Loop-3 0I1-6I2+18I3= 0.................(iii
// By using matrix form will get A*X = B formate
delta=[19 -12 0 ; -12 18 -6 ; 0 -6 18 ]; // value of A
d=det(delta); // Determinant of A
delta1=[60 -12 0 ; 0 18 -6 ; 0 -6 18 ]; // value of A1 (when 1st colomn is replace by B)
d1=det(delta1); // Determinant of A1
Is=d1/d; // Current drawn from source (Is=I1)
disp(' Current drawn from source (Is) = '+string(Is)+' Amp');
// p 79 3.20
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