Texas Instruments TI-89 Titanium - Defining a Column Header with an Expression

Data/Matrix Editor 513
Clearing a Column or all Columns
This procedure erases the contents of a column. It does not delete the column.
Note: For a list or data variable, a clear column is empty. For a matrix, a clear column
contains zeros.
Defining a Column Header with an Expression
For a list variable or a column in a data variable, you can enter a function in the column
header that automatically generates a list of elements. In a data variable, you can also
define one column in terms of another.
Entering a Header Definition
In the Data/Matrix Editor:
To clear: Do this:
A column
1. Move the cursor to any cell in the column.
2. Press:
2 ˆ
and select 5:Clear Column.
(This item is not available for a matrix.)
All columns
Press ƒ and select 8:Clear Editor. When prompted for
confirmation, press
¸ (or N to cancel).