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+//===========================================================================
+//chapter 1 example 4
+
+clc;
+clear all;
+
+//variable declaration
+T1    = 200;            //Tempperature in  °C
+T2    = 225;            //Tempperature in °C
+R1    = 305;           //Resistance in Ω
+R2    = 310;            //Resistance in Ω
+
+//calculations
+S   = (R2-R1)/(T2-T1);    //dr/dt in per  °C
+
+//result
+mprintf("measurement sensitivity S = %3.2f  Ω per °C",S);
+
+
+//==========================================================================
+