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diff --git a/530/CH2/EX2.13.a/example_2_13a.sce b/530/CH2/EX2.13.a/example_2_13a.sce
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+clear;
+clc;
+
+// A Textbook on HEAT TRANSFER by S P SUKHATME
+// Chapter 2
+// Heat Conduction in Solids
+
+// Example 2.13(a)
+// Page 73
+printf("Example 2.13(a), Page 73 \n\n")
+
+D = 0.003 ; // [m]
+L = 0.03 ; // [m]
+h = 10 ; // [W/m^2]
+Tf = 20 ; // [C]
+T1 = 120 ; // [C]
+
+// (a) Copper fin
+k = 350 ; // [W/m K]
+
+// For a circular cross section
+m = [4*h/(k*D)]^(1/2);
+mL = m*0.03 ;
+// T at x = L
+T = Tf + (T1-Tf)/cosh(m*L);
+printf("mL = %f \n",mL);
+printf("Temperature at the tip of fin made of copper is %f degree C \n",T);