### Home > CALC > Chapter 4 > Lesson 4.3.2 > Problem 4-112

4-112.

Refer to the graph below of , the derivative of some function

*.*

Where is

increasing? How can you tell?Notice that this is the graph of

, the slopes of, andwill increase where its slopes are positive.Approximate the interval on which

is concave up. Justify your conclusion with the graph.Is

positive or negative? Explain how you know.represents the slopes of the given graph,. So look at the graph. Does it have a positive or a negative slope at?