The maximum option is used to find a relative maximum. While viewing a graph, press .

Press to obtain the maximum option.

Since a function may have more than one relative maximum, it is necessary to specify an interval containing the desired high point on the graph. The question "LeftBound?" appears at the bottom of the screen. Use the to move the blinking cursor to the left of the relative maximum. Press .

The question "RightBound?" appears at the bottom of the screen. Use the to move the blinking cursor to the right of the relative maximum. Press .

The TI-86 will look for the relative maximum between the triangular markers. The question "Guess?" appears at the bottom of the screen. Move the blinking cursor close to the relative maximum. Press .

The coordinates of the maximum appear at the bottom of the screen. The x coordinate of this maximum, given in scientific notation, is approximately zero. In this case the maximum point is about (0, 8.75).