Texas Instruments TI-89 Titanium User Manual

3D Graphing 362
Exploring the Graph
From the Graph screen, you can:
• Trace the equation.
•Use the „
Zoom toolbar menu to zoom in or out on a portion of the graph. Some of
the menu items are dimmed because they are not available for 3D graphs.
•Use the ‡
Math toolbar menu to evaluate the equation at a specified point. Only
1:Value is available for 3D graphs.
You can also evaluate
z(x,y) while tracing. Type the x value and press ¸; then type
the y value and press ¸.
5. Change the graph format if necessary.
ƒ
9
– or -
8 Í
Note: To help you see the orientation of
3D graphs, turn on
Axes and Labels.
6. Graph the selected equations
(8%).
Note: Before displaying the graph, the
screen shows the “percent evaluated.”

Texas Instruments TI-89 Titanium Specifications

General

Display Type	LCD
Display Resolution	160 x 100 pixels
CPU	Motorola 68000
CPU Speed	16 MHz
RAM	256 KB
Flash ROM	2.7 MB
Programming Language	TI-BASIC, Assembly
Power Source	4 AAA batteries
Connectivity	I/O port
Dimensions	7.5 x 3.5 x 1 inches