Casio CFX – 9850GB
Graphing – Rectangular Coordinates
Paul Vaz
1. GRAPH Mode: On the main menu, select the GRAPH icon to enter the GRAPH
Mode
2. View Window (V-Window)
Press: SHIFT
F3 (to display the view window)
Use the view window to specify the range of x-values, y-values, and the spacing between
the increments on each axis. After specifying the range of values, press EXIT to return
to GRAPH Mode.
3. Graph Function Operations
a) Specify Graph Type: Press: F3 followed by F1 to select Y= type;
b) Store a rectangular coordinate function:
Example: To store the expression x 3  5 x 2  6 x  2 in memory Y1 press
X,  , T
^
3
+
5
X,  , T
The screen will display
c) To draw the graph: Press EXE or F6
The screen will display
x2
+
6
X,  , T
+
2
EXE
4. To edit the function in Y1. Highlight the function, then press the cursor key  .
This will display a cursor at the beginning of the equation. You are now in a position
to edit the equation. After editing, press EXE to store the new equation.
OTHER FEATURES
5. Trace. With trace, you can move a flashing pointer along a graph with cursor keys
and obtain readouts of coordinates at each point on the graph. To use the trace feature
press F1
6. Zoom. To activate the zoom feature press F2 to display the Zoom Menu. To view
additional zoom features press F6. We illustrate two features from the Zoom Menu:
a) Box Zoom. To use the box zoom feature press F1. Use the cursor keys to move the
red pointer on the screen to the location of one corner of the box you want to draw.
Then press EXE. Now use the cursor keys to move the red pointer to the location of
the corner that is diagonally across from the first corner. See below.
Press EXE to zoom into the box, and the screen will display
b) Factor Zoom. To use the factor zoom feature press F2. Use the cursor keys to move
the red pointer on the screen to the location that you want to be the center of the new
display. Press F2 once more. This will display the factor specification screen. If you
choose the zoom factor to be 6(say) on the x-axis and 8(say) on the y-axis, press
6 EXE 8 EXE EXIT F3
The screen will display