Identify the interval on which the function F(x)= 4 - x^2 is increasing or decreasing. Write your answer using interval notation.
My answer was decreasing: (-infinity to infinity) and increasing: (0 to infinity). It was marked wrong. How do I do this problem?
That's not correct because the graph of is a parabola that opens downward. f(x) is increasing for x< 0 and decreasing for x> 0.