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diff --git a/1332/CH13/EX13.1/13_1.sce b/1332/CH13/EX13.1/13_1.sce
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+//Example 13.1
+//Differentiation
+//Page no. 420
+clc;close;clear;
+
+deff('y=f(x)','y=x^2+5')
+deff('y=f1(x,h)','y=(f(x+h)-f(x))/h')
+h=0.01;x=2.4
+d=f1(x,h)
+d1=(f1(x+h,h)-f1(x))/h
+printf('dy\n -- = %g\n dx',d)
+printf('\n\n\n d2y\n --- = %g\n dx2',d1)
+\ No newline at end of file