(d) Give the local maximum and minimum values of f (x). Enter your answers in increasing order of the x-value. If there are less than two local extrema, enter NA in the remaining response areas and the corresponding drop-down menu. Include a multiplication sign between symbols. For example, a . . Click for List Click for List (e) Give the intervals of concavity of f (I). Note: Use the letter U for union. To enter oo, type infinity. If the function is never concave upward or concave downward, enter NA in the associated response area. concave upward: concave downward: (f) Give the inflection points of f (I). Enter your answers in increasing order of the x-coordinate. If there are less than two points of inflection, enter NA in the remaining response areas. Include a multiplication sign between symbols. For example, a . . G P)(9) Select the graph of f (I). 15- O -10 -5. 0 5- 10- 5- O -10 -5 0 10