2. For the function f(x)--81x use calculus to find the following intervals and points. (Show work) (5 points cach) Analysis f(x)s x 3-81 F'Cx) 3x1-81 a. Increasing: b. Decreasing: c. Concave up: d. Concave down: e. Value(s) for x where relative f. Value(s) for x where relative maxima occur: minima occur: g. Value(s) for x where point (s) of inflection occur: