Texas Instruments TITANIUM TI-89 - Manual (Page 924)

Appendix B: Technical Reference 925
Exact/Approx Exact/Approx Exact/Approx Exact/Approx
Specifies how fractional and symbolic expressions are calculated and displayed. By
retaining rational and symbolic forms in the EXACT setting, the TI-89
Titanium / Voyage™ 200 increases precision by eliminating most numeric rounding
errors.
Note: For a complete description of these settings, refer to “Formats of Displayed
Results” in the Operating the Calculator module.
Base Base Base Base
Lets you perform calculations by entering numbers in decimal, binary, or hexadecimal
form.
1:AUTO
Uses
EXACT
setting in most cases. However,
uses
APPROXIMATE
if the entry contains a
decimal point.
2:EXACT
Displays non-whole-number results in their
rational or symbolic form.
3:APPROXIMATE
Displays numeric results in floating-point form.
1:DEC
Decimal numbers use 0 - 9 in the base 10
format
2:HEX
Hexadecimal numbers use 0 - 9 and A - F in the
base 16 format.
3:BIN
Binary numbers use 0 and 1 in the base 2
format.