Functions And Instructions - Texas Instruments TITANIUM TI-89 User Manual

Appendix A:

Functions and Instructions

Name of the function or instruction.
Circle
CATALOG
x y
Circle , ,
Draws a circle with its center at window
coordinates (
,
x y
If
drawMode
If
drawMode
If drawMode
Note: Regraphing erases all drawn items.
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.
Key or menu for entering the name.
You can also type the name.
r drawMode
[, ]
,
) and with a radius of
x y
, and must be real values.
r
= 1, draws the circle (default).
= 0, turns off the circle.
= -1, inverts pixels along the circle.
Arguments are shown in italics.
Arguments in [ ] brackets are
optional. Do not type the brackets.
In a ZoomSqr viewing window:
ZoomSqr:Circle 1,2,3 ¸
r
.
Explanation of the function or
instruction.
,
).
A
Example
781