Determine the intervals on which f is concave down. (Use the symbol U for combining intervals, and an appropriate type of parenthesis "(",")", "[","]" depending on whether the interval is open or closed.) f is concave down on Determine the intervals on which is concave up. (Use the symbol U for combining intervals, and an appropriate type of parenthesis "(",")", "[","]" depending on whether the interval is open or closed.) f is concave up on The figure is the graph of the derivative, f', of a function on [-3,3]. 2 2