a Find the critical points of f x 6x e b Use the First Derivative Test to locate the local maximum and minimum values c Determine the intervals on which f is concave up or concave down Identify any inflection points Part 3 of 6 a Identify all the critical points Select the correct choice below and fill in any answer boxes within your choice A The function has critical points at x 0 4 Use a comma to separate answers as needed x 4 Use a comma to separate answers as needed OB The function has no critical points b Identify the location of all the local maxima Select the correct choice below and fill in any answer boxes within your choice HW Score 79 86 19 17 om Points 0 17 of 1 OA x Use a comma to separate answers as needed OB There are no local minima OB There are no local maxima Identify the location of all the local minima Select the correct choice below and fill in any answer boxes within your choice