Texas Instruments Titanium TI-89 User Manual

Basic Function Graphing 328
Zooming In and Out on a Point
Zooming In and Out on a Point Zooming In and Out on a Point
Zooming In and Out on a Point
•For a
ZoomIn, the x variables are divided by xFact, and the y variables are
divided by
yFact.
new
xmin = xmin/xFact , etc.
•For a
ZoomOut, the x variables are multiplied by xFact, and the y variables are
multiplied by
yFact.
new
xmin = xmin ù xFact , etc.
Changing Zoom Factors
Changing Zoom FactorsChanging Zoom Factors
Changing Zoom Factors
The Zoom factors define the magnification and reduction used by
ZoomIn and ZoomOut.
1. From the „
Zoom menu, select 2:ZoomIn
or
3:ZoomOut.
A cursor appears, and the screen
prompts for
New Center?
2. Move the cursor to the point where you
want to zoom in or out, and then press
¸.
The TI-89 Titanium adjusts the Window
variables by the
Zoom factors defined in
SetFactors.

Texas Instruments Titanium TI-89 Specifications

General

Display Type	LCD
Display Resolution	160 x 100 pixels
Memory	188 KB RAM, 2.7 MB Flash ROM
Type	Graphing Calculator
Display	Monochrome
Processor	Motorola 68000
Processor Speed	12 MHz
Power Source	4 AAA batteries
Connectivity	USB
Programming	TI-BASIC, Assembly
Operating System	AMS (Advanced Mathematics Software)