212 determine the effect of varying ax on the computed result for the
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2.12. Determine the effect of varying Ax on the computed result for the second derivative, as given in Problem 2.9, for the function f(x) = 5 + 10x-4x 2 +
6x 3. The second derivative is to be determined at x = 1. Using a computer or a calculator, calculate the second derivative at x = 1 with Ax =0.5, 0.1, 0.05, and 0.01. Compare the results obtained with the exact value of 28.