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+//Network Theorem 1
+//page no-3.34
+//example3.29
+//calculation of Isc (short-circuit current)
+disp("Writing current equation for supermesh :");
+disp("I2-I1=2");....//equation 1
+disp("Applying KVL to supermesh ,"); 
+disp("12*I1= 55");....//equation 2
+disp("solving these equations we get :");...//solving equations in matrix form
+A=[-1 1;12 0];
+B=[2 55]'
+X=inv(A)*B;
+disp(X);
+disp("I1 = 4.58 A");
+disp("I2 = 6.58 A");
+a=6.58;
+printf("\nIsc = I2 = %.2f A",a);
+//calculation of Rn (norton's resistance)
+disp("replacing the voltage source with short circuit and current source with open circuit ");
+b=12;
+c=4;
+y=((b*c)/(b+c));
+printf("\nRn = %.f Ohm",y);
+//calculation of IL (load current)
+z=8;
+i=a*(y/(z+y));
+printf("\nIL = %.2f A",i);
+\ No newline at end of file