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+//===============================================================
+//Chapter 10 Example 17
+
+
+clc;clear all;
+
+//variable declaration 
+r    = 0.0250;        //resistance in Ω
+R    = 1.0125;        //resistance in Ω
+S    = 1        //sensitivity 
+P1    = 10;        //resistance in Ω
+Q1    = 10;        //resistamce in Ω
+P2    = 9.95;        //resistance in Ω
+Q2    = 10.05;        //resistamce in Ω
+l   = 100;
+
+//calculations
+r1    = r/100;        //resistance in Ω per scale division 
+x1    = P1/Q1;    
+x2    = P2/Q2;    
+//P/Q    = (R+(l1*r))/(S+(l-l1)*r)
+//(s*x)+((l-l1)*r) = R+(l1*r)
+//(S*x)+(l*r)-(l1*r) = R+(L1*r)
+//(S*x)+(l*r)-R = (l1*r)+(l1*r)
+l1     = ((S*x1)+(l*r1)-R)/(r1+r1);        //scale divisions 
+l12    = ((S*x2)+(l*r1)-R)/(r1+r1);        //scale divisions
+
+//result
+mprintf("hence the balance is obtainde at %3.0f and 75 scale divisions",l1);
+mprintf("\nhence the balance is obtainde at %3.0f and 95 scale divisions",l12);
+