Texas Instruments TITANIUM TI-89 - Manual (Page 530)

Data/Matrix Editor 530
• Press A or B to remove the highlighting. Then edit the old expression.
Note: To cancel any changes, press N before pressing ¸.
Note: The seq function is described in the Technical Reference module. If you refer
to an empty column, you will get an error message unless Auto-calculate = OFF .
Note: For a data variable, header definitions are saved when you leave the Data/ Matrix
Editor. For a list variable, the definitions are not saved (only their resulting cell values).
You can use an expression that: For example:
Generates a series of numbers. c1=seq(x^2,x,1,5)
c1={1,2,3,4,5}
Refers to another column. c2=2
ù
c1
c4=c1
ù
c2–sin(c3)
3. Press ¸, D, or C to save the
definition and update the columns.
Ê
c1=seq(x,x,1,7);
Ë
c2=2
ù
c1;
Ì
You cannot directly change a locked
cell (
Œ
) since it is defined by the column header.
К Л
М