Texas Instruments -84 Plus, Manual Book

Page: 117 / 696

Chapter 3: Function Graphing 114
As you move the cursor around the graph, the coordinate values of the cursor location
are displayed at the bottom of the screen if
CoordOn
format is selected. The
Float
/
Fix
decimal mode setting determines the number of decimal digits displayed for the
coordinate values.
To display the graph with no cursor and no coordinate values, press
‘
or
Í
.
When you press
|
,
~
,
}
, or
†
, the cursor moves from the same position.
Graphing Accuracy Graphing Accuracy Graphing Accuracy Graphing Accuracy
The free-moving cursor moves from pixel to pixel on the screen. When you move the
cursor to a pixel that appears to be on the function, the cursor may be near, but not
actually on, the function. The coordinate value displayed at the bottom of the screen
actually may not be a point on the function. To move the cursor along a function, use
r
.
The coordinate values displayed as you move the cursor approximate actual math
coordinates, *accurate to within the width and height of the pixel. As
Xmin
,
Xmax
,
Ymin
,
and
Ymax
get closer together (as in a
Zoom In
) graphing accuracy increases, and the
coordinate values more closely approximate the math coordinates.
Free- moving cursor “on”
the curve