Casio CFX-9800G

GRAPH FUNCTIONS
The graphing capabilities of the CFX-9800G make it possible to
graph complex functions using either rectangular coordinates =.
(horizontal axis: x; vertical axis: y) or polar coordinates (horizontal
axis: 6; vertical axis: r).
Specifying the Graph Type
Before drawing a graph, you.rmust first specify the graph type
(rectangular or polar) to suit the variables you will use. The following
procedure shows how to specify rectangular coordinate graphing.
1, Enter the COMP Mode from the Main Menu. :>-*
2. Press fae) to make the COMP Mode set up screen
appear,
ingle iDes-
Display! Nem”
M-D/Cey! M-Dise
8. Press (REC) to specify rectangular coordinates for the
graph type.
4, Press to return to the previous display.
Built-in Function Graphing
The built-in scientific functions (sin, log, x2, etc.) make it easy to
produce graphs.
Example: To graph y = sin x.
1. Press (Grept}.
Quick-Start: Xll
Built-in Function Graphing cont'd :
2, Press 7You:do.not have to input a value for variable x.
3. Press to draw the graph.
Trace Function
With the trace function, you can move a pointer around the graph
and produce readouts of the coordinates at the current pointer
location. Pr edige™ aa
1. While a graph is on the display, press (Trace). This makes
the pointer appear at the far left point of the graph. The x-
coordinate and y-coordinate ‘for the current pointer location
appears at the bottom of the display.
2.Use @ and -@ to move the pointer on the graph.
3. Press (Coord) to display:a more precise value for the x-
coordinate. : :
4. Press (Fe } (Coord) ‘again to view a more precise value for the y-
coordinate.
5. Press (£1) (Trace) to exit the trace function.
Quick-Start Xttt