Maximum Option


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



Press to obtain the maximum option.



(The "1" in the upper right-hand corner indicates finding a relative maximum on the graph of function one.)

Press .



The coordinates of the maximum appear at the bottom of the screen. In this case the maximum point is about (4.9,2.8).


Note: Since a function may have more than one relative maximum, you may need to specify an interval containing the desired high point on the graph.



To set the lower bound press and move the cursor to the left of the relative maximum and press .

To set the upper bound press and move the cursor to the right of the relative maximum and press .

There should be two small triangles at the top pointing towards each other. These settings can be adjusted by reselecting lower or upper and will go away when you change your window. The TI-85 will look for the relative maximum between these markers.