Texas Instruments TI-83 PLUS - Manual (Page 557)

TI-83 Plus Activities 554
3. Press | , ~ , } , and † to move the free-
moving cursor to the apparent maximum of the
function.
As you move the cursor, the X and Y coordinate
values are updated continually.
4. Press r . The trace cursor is displayed on
the Y 1
function.
The function that you are tracing is displayed in
the top-left corner.
5. Press | and ~ to trace along Y 1
, one X dot at
a time, evaluating Y 1
at each X .
You also can enter your estimate for the
maximum value of
X .
6. Press 3
Ë
8 . When you press a number key
while in
TRACE
, the X= prompt is displayed in the
bottom-left corner.