### Home > APCALC > Chapter 4 > Lesson 4.2.4 > Problem 4-88

4-88.

Without a calculator, describe the graph of . A complete answer states where

*is increasing, decreasing, concave up, concave down, and any points of inflection.*

When ,

*is increasing. When*

*,*

*is decreasing. An inflection point occurs when*

*. When*

*, the function is concave up. When*

*, the function is concave down.*