Texas Instruments TI-89 Manual Book page 244

Changing the
Cell Width
Note: By default, the cell
width is 6.
How Numbers Are
Displayed in a Cell
Note: If a function is
undefined at a particular
value, undef is displayed in
the cell.
Tip: Use 3 to set the
display modes.
Tip: To see a number in full
precision, highlight the cell
and look at the entry line.
If Results are
Complex Numbers
Cell width determines the maximum number of digits and symbols
(decimal point, minus sign, and "í " for scientific notation) that can
be displayed in a cell. All cells in the table have the same width.
To change the cell width from the
Table screen:
1. Press ƒ
9
— or —
¥ Í
TI-89:
¥
TI-92 Plus: F.
2. Press B or A to display a menu
of valid widths ( 3 –
3. Move the cursor to highlight a number and press ¸. (For
single-digit numbers, you can type the number and press ¸.)
4. Press ¸ to close the dialog box and update the table.
Whenever possible, a number is shown according to the currently
selected display modes (
number may be rounded as necessary. However:
¦
If a number's magnitude is too large for the current cell width, the
number is rounded and shown in scientific notation.
¦
If the cell width is too narrow even for scientific notation, "..." is
shown.
By default,
Display Digits = FLOAT 6
is shown with up to six digits, even if the cell is wide enough to show
more. Other settings similarly affect a displayed number.
Full Precision
1.2345678901
ë
123456.78
.000005
1.2345678 19
E
ë 1.23456789012 ë 200 ...
E
Note: Depending on display mode settings, some values are
not shown in full precision even when the cell is wide enough.
A cell shows as much as possible of a complex number (according to
the current display modes) and then shows "..." at the end of the
displayed portion.
When you highlight a cell containing a complex number, the entry
line shows the real and imaginary parts with a maximum of four
digits each ( ).
FLOAT 4
12 ).
,
Display Digits Exponential Format
. With this mode setting, a number
If cell width is:
3 6 9
1.2 1.2346 1.23457
... ë 1.2 5 ë 123457.
E
... 5. ë 6 .000005
E
... 1.2 19 1.2346 19
E E
ë 1.2 ë 200
...
E
Chapter 13: Tables
, etc.). The
12
1.23457
ë 123457.
.000005
1.23457 19
E
ë 1.2346 ë 200
E
227