### Home > CALC > Chapter 4 > Lesson 4.4.2 > Problem 4-143

4-143.

The graph of is shown below. Find the intervals where

*is increasing, decreasing, concave up, and concave down.*

We are looking at a graph of , but being asked about the graph of

*.*

So think about what

*tells us about*

*.*

If is positive, then

*is increasing (and vice versa).*

If

*is increasing, then*

*is concave up (and vise versa).*