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In the example, the function
2
is graphed.
y(x)=x^3+.3x
-4x
The numeric display mode
settings do not affect
coordinate display.
Using the Free-Moving Cursor
When you select
GRAPH
screen is displayed with the free-moving cursor at the
center of the screen.
The cursor appears as a plus sign with a flashing center
pixel. To move the cursor, press ", #, !, or $; it moves
in the direction of the cursor key you press.
In
format, each cursor movement updates the variables
RectGC
format, each cursor movement updates
In
format, the
CoordOn
graph screen as you move the cursor.
Graphing Accuracy
The coordinate values displayed as you move the cursor approximate actual mathematical
coordinates, accurate to within the width and height of the pixel. As the difference between
and
and between
xMin
xMax
in on a graph), graphing is more accurate and coordinate values approximate the actual
mathematical coordinates more closely.
The free-moving cursor coordinates represent the cursor location on the graph screen.
Moving the free-moving cursor precisely from one plotted point to the next along a function
is very difficult. To move along a function easily, use the trace cursor (page 90).
from the
menu, the graph
GRAPH
,
,
x
y
and
cursor coordinates are displayed at the bottom of the
x
y
and
becomes smaller (for example, when you zoom
yMin
yMax
Chapter 6: Graph Tools
and
x
, and
.
R
q
89
. In
y
PolarGC
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