Texas Instruments PLUS TI-89 - Manual (Page 244)

Chapter 13: Tables 227
13TABLES.DOC TI-89/TI-92 Plus: Tables (English) Susan Gullord Revised: 02/23/01 1:08 PM Printed: 02/23/01 2:16 PM Page 227 of 10
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 —
TI - 89: ¥ Í
TI - 92 Plus: ¥ F.
2. Press B or A to display a menu
of valid widths ( 3 – 12 ).
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 (
Display Digits , Exponential Format , etc.). The
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 . With this mode setting, a number
is shown with up to six digits, even if the cell is wide enough to show
more. Other settings similarly affect a displayed number.
If cell width is:
Full Precision 3 6 9 12
1.2345678901 1.2 1.2346 1.23457 1.23457
л 123456.78 ... л 1.2 E 5 л 123457. л 123457.
.000005 ... 5. E ë 6 .000005 .000005
1.2345678 E 19 ... 1.2 E 19 1.2346 E 19 1.23457 E 19
ë 1.23456789012 E л 200 ... ... л 1.2 E л 200 л 1.2346 E ë 200
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 ).
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
Note: Depending on display mode settings, some values are
not shown in full precision even when the cell is wide enough.