Texas Instruments TI-89 Manual De Usuario
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Note:
If you don’t need to save the current variable, use it as a scratchpad. The next time
you need a variable for temporary data, clear the current variable and re-use it. This lets
you enter temporary data without wasting memory by creating a new variable each time.
you enter temporary data without wasting memory by creating a new variable each time.
3. Move to column 2, and define its column
header so that it is twice the value of
column 1.
column 1.
DATA
is shown in the upper-left corner to
indicate that the list variable was
converted to a data variable.
converted to a data variable.
Press
B † 2 p j C 1 ¸
4. Move to the column 2 header cell to show
its definition in the entry line.
When the cursor is on the header cell,
you do not need to press
you do not need to press
† to define it.
Simply begin typing the expression.
Press
2 C C
5. Clear the contents of the variable.
Simply clearing the data does not convert
the data variable back into a list variable.
the data variable back into a list variable.
Press
, 8 ¸
Steps and keystrokes
Display
Œ
means the cell is in
a defined column.