After completing this section, students should be able to do the following.

- Find the critical points of a function of two variables.
- Use the second derivative test to classify local extrema.
- Find local extrema of functions of two variables.

After completing this section, students should be able to do the following.

- Find the critical points of a function of two variables.
- Use the second derivative test to classify local extrema.
- Find local extrema of functions of two variables.