Determine the error term for the formula (5) 1 2h 2-2. Use the above formula to approximate f'(1.8) with f(x) = In using h=0.1, 0.01 and 0.001. Display your results in a table and then show that the order of accuracy obtained from your results is in agreement with the theory in question 2-1. [10] ${(z) *27448(a+h) – 3f (a) – f(a +26)