### Home > PC > Chapter 9 > Lesson 9.3.4 > Problem 9-142

9-142.

Use the definition of the derivative to find the value of when

*. What does this value tell you about the function at*

*?*

You will need to use a calculator to obtain your approximation.

9-142.

Use the definition of the derivative to find the value of when

You will need to use a calculator to obtain your approximation.