Texas Instruments TI-73 EXPLORER 用户手册

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196
     Chapter 10: Drawing
7310ENG.DOC   Draw   Texas Instruments   Revised: 05/29/98 6:43 PM   Printed: 05/19/99 9:01 AM   Page 196 of 22
Draw a circle from the Graph screen.
1. Clear all previous drawings,
and select the center point
of the circle.
* 2
1
2
6
# $ " !  (as
necessary)
b
2. Move the cursor to a point
on the circumference.
$ # " !
(as necessary)
3. Draw the circle.
b
 
Circle( from the Home Screen or Program Editor
From the Home screen or the Program editor, you can draw a
circle on the Graph screen. 
Circle(
 accepts three mandatory
arguments: X and Y, the coordinates of the center point of the
circle, and radius, the radius length which must be a positive
real number.
Circle(
X,Y,radius
)
Draw a circle with center point=(0,0) and radius=7.
- l : 2
1
b 2
6
0
¡
0
¡
7
E b
Note: Use 
(
 
5:
ZSquare to adjust
them and make the circle circular.
³
³