Question: Given the function f(x) = x 3+ 12x + 13x-15, complete the following. Enter INF for infinity or -INF for negative infinity. ANSWER PART A

Given the function f(x) = x 3+ 12x + 13x-15, complete the following. Enter INF for infinity or -INF for negative infinity. ANSWER PART A IN INTERVAL NOTATION. A) f(x) is concave downwards on the interval B) The point of inflection is (Answer as an ordered pair, (x,y) )

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