Problem 2 Consider the function f(x) = x³. Calculate the first derivative df/dx at x=3 numerically with the fourth order center difference formula (O(h³)) using a) Points x 1, x = 2, x = 4 and x =5 b) Points x=2.50, x = 2.75, x = 3.25 and x = 3.50. c) Calculate the error for (a) and (b) compare to the exact (analytical) solution.