The maximum option is used to find a relative minimum. Press .

Press . (The maximum option can also be obtained by using the to select option 4 and pressing .) Since a function may have more than one relative maximum, specify an interval containing the desired left point on the graph. (The equation in the upper left-hand corner indicates finding a relative minimum on the graph of the given function.)

The question "Left Bound?" appears at the bottom of the screen. Use the to move the blinking cursor to the

The question "Right Bound?" appears at the bottom of the screen. Use the to move the blinking cursor to the

The arrows at the top of the screen indicate the boundaries between which the calculator will give the relative maximum. (The arrows must point toward each other.) The question "Guess?" appears at the bottom of the screen. Locate the cursor between the established boundaries. Press .

The coordinates of the maximum appear at the bottom of the screen. In this case the maximum point is (5,10/3).

Within this interval, the function never reaches a turning point. However, there is a maximum within that interval, and the TI-83 finds it.