Appendix A: Functions and Instructions 781
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:
Functions and Instructions
Categorical Listing of Operations ...................................................................782
Alphabetical Listing of Operations.................................................................. 786
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
le
Explanation of the function or
instruction.
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