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+// example 4.9
+// caption :obtain the polinomial of degree 2 
+
+x=[0 1 3];
+f=[1 3 55];
+n=2;
+
+// 1) iterated interpolation;
+
+
+[L012,L02,L01]=iteratedinterpol (x,f,n)
+
+//  2) newton divided diffrences interpolation;
+
+
+ P2=NDDinterpol2 (x,f)
+\ No newline at end of file