Texas Instruments TITANIUM TI-89 - Manual (Page 153)

Operating the Calculator 153
Entering Alphabetic Characters Entering Alphabetic Characters Entering Alphabetic Characters Entering Alphabetic Characters
Alphabetic characters are used in expressions such as x
2
+y
2
to enter variable names
and in the Text Editor (Text Editor module).
Entering a Letter Character on the TI-89 Titanium Entering a Letter Character on the TI-89 Titanium Entering a Letter Character on the TI-89 Titanium Entering a Letter Character on the TI-89 Titanium
The letters x, y, z, and t are commonly used in algebraic expressions. So that you can
type them quickly, these letters are primary keys on the TI-89 Titanium keyboard.
2 ¯ Displays the MEMORY screen.
2 ° Displays the VAR-LINK screen for managing variables
and Flash applications.
2 £ Recalls the contents of a variable.
@ 2 9 Displays the UNITS dialog box.
2 ¿ Displays the CHAR menu, which lets you select Greek
letters, international accented characters, etc.
2 `
,
2 ±
Recalls the previous entry and the last answer,
respectively.
Key Description
X Y Z T