
On what interval(s) is f(x) concave down?
On what interval(s) is f(x) concave up?

What are the x-values of the point(s) of inflection for f(x)?
On what interval(s) is f(x) concave up?
What are the x-values of the points of inflection for f(x)?

On what interval(s) is f(x) concave up?
On what interval is f(x) concave up?
On what interval is f(x) concave up?