Owner's Manual

Table Of Contents
Appendix A: Categorical Listing of Operations 779
Name of the function or instruction.
Key or menu for entering the name.
You can also type the name.
Syntax line shows the order and the type of
arguments that you supply. Be sure to separate
multiple arguments with a comma (
,).
Appendix A:
Categorical Listing of Operations
Quick-Find Locator .....................................................................780
Alphabetical Listing of Operations............................................784
This section describes the syntax and action of each TI-89 Titanium function and instruction that is included in
the operating system (OS). See modules relating to calculator software applications (Apps) for functions and
instructions specific to those Apps.
Circle CATALOG
Circle
x
,
y
,
r
[,
drawMode
]
Draws a circle with its center at window
coordinates (
x
,
y
) and with a radius of
r
.
x
,
y
, and
r
must be real values.
If
drawMode
= 1, draws the circle (default).
If
drawMode
= 0, turns off the circle.
If
drawMode
= -1, inverts pixels along the circle.
Note: Regraphing erases all drawn items.
In a ZoomSqr viewing window:
ZoomSqr:Circle 1,2,3 ¸
Arguments are shown in italics.
Arguments in [ ] brackets are
optional. Do not type the brackets.
Exam
p
le
Explanation of the function or
instruction.
A