Texas Instruments Titanium TI-89 User Manual

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variables are locked automatically.) Finally, unarchive the variable and delete the unused
variables so that they will not take up memory.
Steps and keystrokes Display
1. From the Home screen, assign variables
with the following variable types.
Expression: 5 !x1
Function: x
2
+4 !f(x)
List: {5,10} !L1
Matrix: [30,25] !m1
Press " M 5 9 X1 ¸ X Z
2 « 4 9 j F c X d ¸ 2 [
5 b 10 2 \ 9 j L1 ¸ 2
g 30 b 25 2 h 9 j M1 ¸
2. Suppose you start to perform an
operation using a function variable but
can’t remember its name.
Press 5 p
3. Display the
VAR-LINK screen.
This example assumes that the variables
assigned above are the only ones
defined.
Press 2 °
5…

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)