Texas Instruments TI-89 Manuel D’Utilisation

Appendix B: Technical Reference

922

Note: For detailed information about using folders, see Calculator Home Screen.

Display Digits

Selects the number of digits. These decimal settings affect only how results are
displayed—you can enter a number in any format.

Internally, the TI-89 Titanium / Voyage™ 200 retains decimal numbers with 14 significant
digits. For display purposes, such numbers are rounded to a maximum of 12 significant
digits.

Angle

Specifies the units in which angle values are interpreted and displayed in trig functions
and polar/rectangular conversions.

Exponential Format

Specifies which notation format should be used. These formats affect only how an
answer is displayed; you can enter a number in any format. Numeric answers can be
displayed with up to 12 digits and a 3-digit exponent.

1:main

Default folder included with the TI-89
Titanium / Voyage™ 200.

2: —
(custom folders)

Other folders are available only if they have
been created by a user.

1:FIX 0
2:FIX 1

…

D:FIX 12

Results are always displayed with the
selected number of decimal places.

E:FLOAT

The number of decimal places varies,
depending on the result.

F:FLOAT 1
G:FLOAT 2

…

Q:FLOAT

If the integer part has more than the selected
number of digits, the result is rounded and
displayed in scientific notation.
For example, in

FLOAT 4

12345

. is shown as

1.235E4

1:RADIAN

2:DEGREE

3:GRADIAN

1:NORMAL

Expresses numbers in standard format. For
example,

12345.67

2:SCIENTIFIC

Expresses numbers in two parts:

•

The significant digits display with one digit to the
left of the decimal.

•

The power of 10 displays to the right of

For example, 1.234567

4 means 1.234567