Casio CFX-9850G PLUS, User'S Manual & Technical Reference

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160
u u
u u
u
To turn plot points on and off in the RUN or PRGM Mode
The following are the syntax for turning plot points on and off in these modes.
• To turn a plot point on
PlotOn <
x
-coordinate>, <
y
-coordinate>
• To turn a plot point off
PlotOff <
x
-coordinate>, <
y
-coordinate>
• To change the on/off status of a plot point
PlotChg <
x
-coordinate>, <
y
-coordinate>
k k
k k
k
Drawing a Line
[Sketch]
-
[LINE]
To draw a line on a graph, first display the sketch menu and then press
6
(
g
)
2
(LINE) to display the line menu.
• {
Line
} ... {Draw a line between two plotted points}
• { F·Line } ... {Draw a line}
u u
u u u
To connect two plotted points with a line in the STAT, GRAPH,
TABLE, RECUR and CONICS Modes
[Sketch]
-
[LINE]
-
[Line]
Example To draw a line between the local maximun and local minimum
on the graph of
y
=
x
(
x
+ 2)(
x
– 2)
Use the same View Window parameters as in the example on page
155.
1. After drawing a graph, display the sketch menu and then press
6
(
g
)
1
(PLOT)
1
(Plot) to display the pointer in the center of the screen.
2. Use the cursor keys to move the pointer to the local maximum and press
w
to
plot it.
3. Use the cursor keys to move the pointer to the local minimum.
10 - 2
Graphing with the Sketch Function