Formats Of Displayed Results - Texas Instruments TI-89 Manual Book

Formats of Displayed Results

Pretty Print Mode
Exact/Approx Mode
Note: By retaining fractional
and symbolic forms,
EXACT
reduces rounding errors that
could be introduced by
intermediate results in
chained calculations.
A result may be calculated and displayed in any of several
formats. This section describes the
and their settings that affect the display formats. To check or
change your current mode settings, refer to page 40.
By default,
Pretty Print = ON
displayed in the same form in which they are traditionally written.
You can use 3 to turn pretty print off and on.
Pretty Print
ON
xì 3
p
ñ
, ,
p
2 2
The entry line does not show an expression in pretty print. If pretty
print is turned on, the history area will show both the entry and its
result in pretty print after you press ¸.
By default,
Exact/Approx = AUTO
three settings.
Because is a combination of
AUTO
the other two settings, you should be
familiar with all three settings.
EXACT — Any result that is not a whole number is displayed in a
fractional or symbolic form (
TI-89 / TI-92 Plus
. Exponents, roots, fractions, etc., are
OFF
p^2 , p/2 , ‡((xì 3)/2)
. You can use 3 to select from
, p,
, etc.).
1/2
2
Shows whole-number results.
Shows simplified fractional results.
Shows symbolic p.
Shows symbolic form of roots that
cannot be evaluated to a whole
number.
Press ¥ ¸ to temporarily
override the
display a floating-point result.
Chapter 2: Operating the Calculator
modes
setting and
EXACT
29