Texas Instruments TI-84 - Manual (Page 476)

Chapter 17: Activities 473
4. Press
r. The trace cursor is
displayed on the Y1 function.
The function that you are tracing is
displayed in the top-left corner.
5. Press
| and ~ to trace along
Y1 , one X
dot at a time, evaluating Y1 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.
7. Press
Í.
The trace cursor jumps to the point on
the
Y1 function evaluated at X=3.8 .
8. Press
| and ~ until you are on the
maximum Y value.
This is the maximum of Y1(X) for the X
pixel values. The actual, precise
maximum may lie between pixel values.