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+// Exa 3.2
+
+clc;
+clear all;
+
+// Given data
+
+//Refer fig. 3.4
+Rm=100;//Ohms
+Im=50; ///micro Amp
+
+// Solution
+
+//For 0-1mA range
+ // Ish*Rsh=Im*Rm;
+ disp("The four linear equations are as follows:");
+ printf(' R1+R2+R3+R4 = %.2f \n ',50*100/950);  //say-equaion (3.1)
+ 
+ //For 0-10 mA range
+ printf('R1+R2+R3-(50/9950)*R4= % .3f \n ',100*50/9950); //say-equation(3.2)
+ 
+ //For 0-50 mA range
+ printf('R1+R2-(50/49950)*R3-(50/49950)*R4 = %.3f \n ',100*50/49950); //say-equation(3.3)
+ 
+ //For 0-100mA range
+ printf('R1-(50/99950)*R2-(50/99950)*R3-(50/99950)*R4 = %.3f \n ',50*100/99950);//say-equation(3.4)
+ 
+ //converting it into matrix form
+ A=[1 1 1 1;1 1 1 -(50/9950);1 1 -(50/49950) -(50/49950);1 (-50/99950)  (-50/99950) (-50/99950)];
+ 
+ B=[-50*100/950 ; -100*50/9950  ; -100*50/49950 ;  -50*100/99950];
+ 
+ [R,y]=linsolve(A,B);A*R+B;//linear equaion solving function
+ 
+ disp("The value of R1,R2 R4 and R4 are given as follows-");
+ printf(' R1 = %.5f Ohms \n R2= %.5f Ohms \n R3= %.5f Ohms \n R4= %.5f Ohms \n ',R(1),R(2),R(3),R(4));
+ 
+ // The value of R3 vary due to round off errors