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+//Example 2.10
+clc
+clear
+
+N = 12;
+xold = 3.5;
+iter = 1;
+maxit = 3;
+
+while (1)
+ xnew = (xold + N/xold) / 2;
+ if iter == maxit then
+ break
+ end
+ xold = xnew;
+ iter = iter + 1;
+end
+root = round(xnew*10^4) / 10^4;
+disp(root,"root = ")