Question 9 0/1 pt 9 3 99 0 Details Let f(I) = 1 - 31 - 3. Calculate the derivative f' (I) = Calculate the second derivative f"'(z) - ices Note intervals are entered in the format (-00,5)U(7,oo) (these are two infinite intervals). ations On what interval(s) is f increasing? Increasing: Tutorials On what interval(s) is f decreasing? Decreasing: On what interval(s) is f concave downward? 65 Concave Down: Resources On what interval(s) is f concave upward? Concave Up: What is the limit as x approaches infinity? Limit is: What is the limit as x approaches negative infinity? Limit is