Casio fx-9750G Sketch Function - Manual (Page 12)

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k k k k k Drawing a Circle
You can use the following procedures to draw a circle on a graph.
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To draw a circle in the STAT, GRAPH, TABLE, RECUR and CONICS
Modes
Example To draw a circle with a radius of R = 1 centered at point (1, 0)
on the graph of
y = x ( x + 2)( x – 2)
1. After graphing the function, display the sketch menu and perform the following
operation to cause the pointer to appear on the graph screen.
!4 (Sketch) 6 (
g
) 3 (Crcl)
2. Use the cursor keys (
f
,
c
,
d
,
e
) to move the pointer to the location where
you want the center point of the circle to be and press w to plot it.
e
~
e
w
3. Use the cursor keys to move the pointer to a point on the circumference of the
circle (here to point x = 0) and then press w to draw the circle.
d
~
d
w
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To draw a circle in the RUN or PRGM Mode
The following is the syntax for drawing circles in these modes.
Circle <center point x -coordinate>, <center point y -coordinate>, <radius R value>
• Certain View Window parameters can make a circle appear as an ellipse.
10 - 2
Graphing with the Sketch Function