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+//===========================================================================
+//chapter 3 example 5
+clc;
+clear all;
+
+//variable declaration
+er      = 1.5*10^-2;                   //accuracy 
+A1       = 10;                           //current in A
+A2      = 2.5;                          //current in A
+
+//calculations
+dA      = er*A1;                        //magnitude of limiting error of the instrument 
+er1      = dA/(A2);                //magnitude of current 
+A11      = A2*(1+er1);                   //current in A
+A12      = A2*(1-er1);                   //current in A
+er2      = (dA/(A2))*100;                //limiting error in %
+
+//result
+mprintf("limiting values of current  =%3.2f A and  %3.2f",A11,A12);
+mprintf("\nlimiting error = %3.1f percentage',er2);
+