Display Digits Mode - Texas Instruments TITANIUM TI-89 User Manual

To retain an EXACT form, use fractions instead of decimals. For example, use 3/2
Note:
instead of 1.5.
The following chart compares the three settings.
Exact
Entry Result
8/4 2
8/6 4/3
ù
51/2
8.5 3
(2)/2
‡
2
------ -
2
2 2
pù p
2. 2
pù p
To evaluate an entry in APPROXIMATE form, regardless of the current setting,
Note:
press 8 ¸.

Display Digits Mode

Display Digits Mode
Display Digits Mode Display Digits Mode
By default,
Display Digits = FLOAT 6
maximum of six digits. You can use 3 to select different settings. The settings apply
to all exponential formats.
Operating the Calculator
Approximate
Result Result
2.
1.33333
25.5
.707107
6.28319
6.28319 6.28319
, which means that results are rounded to a
Auto
2
4/3
25.5 — A decimal in the
entry forces a
2 floating-point result
------ -
in AUTO.
2
2
p
169