In: Math
Choose ALL the statements that are true for f(x)=12x-x3
a. The graph of f(x) is increasing on (-2,2)
b. f(x) has no inflection point
c. The graph of f(x) is concave downward on (- infinity,0)
d. The graph of f(x) is decreasing on (-2,2)
e. f(x) has an inflection point at x=0
f. The graph of f(x) is concave upward on (-infinity,0)