Texas Instruments TI-89 Manual Book page 567

Modes
Graph
Current Folder
Note: For detailed
information about using
folders, see Chapter 5.
Display Digits
550 Appendix B: Reference Information
This section describes the modes of the
lists the possible settings of each mode. These mode settings
are displayed when you press 3.
Specifies the type of graphs you can plot.
1:FUNCTION y(x)
2:PARAMETRIC x(t)
3:POLAR r(q)
4:SEQUENCE u(n)
5:3D z(x,y)
6:DIFF EQUATIONS y'(t)
Note: If you use a split screen with
the top or left part of the screen and
right part.
Specifies the current folder. You can set up multiple folders with
unique configurations of variables, graph databases, programs, etc.
Default folder included with the
1:main
Other folders are available only if they have been
2: —
created by a user.
(custom folders)
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 / TI-92 Plus
significant digits. For display purposes, such numbers are rounded to
a maximum of 12 significant digits.
Results are always displayed with the selected
1:FIX 0
number of decimal places.
2:FIX 1
D:FIX 12
E:FLOAT The number of decimal places varies, depending
on the result.
If the integer part has more than the selected
F:FLOAT 1
number of digits, the result is rounded and
G:FLOAT 2
displayed in scientific notation.
Q:FLOAT 12
For example, in
12345
TI-89 / TI-92 Plus
functions (Chapter 6)
and parametric equations (Chapter 7)
y(t)
polar equations (Chapter 8)
sequences (Chapter 9)
3D equations (Chapter 10)
differential equations (Chapter 11)
Number of Graphs = 2
is for the bottom or
Graph 2
retains decimal numbers with 14
:
FLOAT 4
. is shown as
1.235 4
E
and
, Graph is for
.
TI-89 / TI-92 Plus