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+//CHAPTER 1- D.C. CIRCUIT ANALYSIS AND NETWORK THEOREMS 
+//Example 6
+
+disp("CHAPTER 1");
+disp("EXAMPLE 6");
+
+//VARIABLE INITIALIZATION
+n=4;                                  //number of nodes
+b=6;                                  //number of branches
+
+//SOLUTION
+m=b-n+1;                             //number of mesh equations
+disp(sprintf("Number of mesh equations are %d",m));
+nd=n-1;                              //number of node equations
+disp(sprintf("Number of node equations are %d",nd));
+
+//(5/2)I1+(-2)I2+(-1/2)I3=4.....eq (1)
+//(0)I1+(0)I2+(1)I3=-2..........eq (2)
+//(-2)I1+(10/3)I2+(-1/3)I3=0....eq (3)          
+//using matrix method to solve the set of equations
+A=[5/2 -2 -1/2;-2 10/3 -1/3;0 0 1];
+b=[4;0;-2];
+x=inv(A)*b;
+I=x(1,:);                              //to access the 1st element of 3X1 matrix
+disp(sprintf("The current from the source Vs is %d A",I));
+
+//END