33. Let f be a function whose first derivative is f'(x) = In (x* - 2x7 + 1) +1 on the interval [ - 2, 2]. Which of the following represents all the intervals on which f is concave up? A. ( - 1, 0) and (1, 2] B. There are no points when it is concave up C. (- 0.627, 0) and (1.267, 2] D. At the point x = 0 E. [- 2, - 1.267), (- 0.627, 0.627) and (1.267, 2] 34. If a function has a smooth maximum at x = 4 (it is not a cusp or corner), its second derivative at x = 4 is A. Positive B. Negative C. Zero D. Increasing E. Decreasing