Drawing a Circle. Casio FX-9750G

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Graphing with the Sketch Function k Drawing a Circle

You can use the following procedures to draw a circle on a graph.

uuuuu

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 uuuuu

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.

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