### Home > APCALC > Chapter 8 > Lesson 8.2.2 > Problem 8-82

8-82.

**Multiple Choice: **The maximum value of over the interval

Expand *f* before differentiating.

Remember that a maximum value is a *y*-value, not an *x*-value.

Notice that this is a CLOSED domain:

Since maxima can exist where or where

*, it is important to check the*

*y*-values at each endpoint.

*________ and*

*________*

After all, an endpoint might exceed the

*y*-values where

*; in which case, that endpoint will be in the global maximum.*