For what values of x is #f(x)= -4x^3-x+12# concave or convex?
1 Answer
Aug 23, 2017
Concave up in the interval
Cocave down in the interval
Explanation:
First determine f'(x) =
The inflection point is at f"(x)=0 which gives x=0, which is a inflection point.
Thus in the interval