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+//Example 7.2//
+a=8.8*10^-6;//mm/(mm degree C) //linear coefficient of thermal expansion
+L0=0.1;//mm //Given direction
+T=1000;//degree Celsius // Temperature
+T1=25;//degree Celsius //Temperature
+dL=a*L0*(T-T1)
+mprintf("dL = %e m ",dL)
+b=10^3;// (As 1 milli = 10^-3 milli)
+dL1= dL*b
+mprintf("\ndL1 = %f mm (As 1 milli = 10^-3 milli)",dL1)