Texas Instruments PLUS TI-89 - Manual (Page 567)

550 Appendix B: Reference Information
8992APPB DOC TI-89/TI-92 Plus:8992appb doc (English) Susan Gullord Revised: 02/23/01 1:54 PM Printed: 02/23/01 2:24 PM Page 550 of 34
Specifies the type of graphs you can plot.
1:FUNCTION y(x) functions (Chapter 6)
2:PARAMETRIC x(t) and y(t) parametric equations (Chapter 7)
3:POLAR r( q ) polar equations (Chapter 8)
4:SEQUENCE u(n) sequences (Chapter 9)
5:3D z(x,y) 3D equations (Chapter 10)
6:DIFF EQUATIONS y'(t) differential equations (Chapter 11)
Note: If you use a split screen with Number of Graphs = 2 , Graph is for
the top or left part of the screen and Graph 2 is for the bottom or
right part.
Specifies the current folder. You can set up multiple folders with
unique configurations of variables, graph databases, programs, etc.
1:main Default folder included with the TI -89 / TI-92 Plus .
2: —
(custom folders) Other folders are available only if they have been
created by a user.
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 retains decimal numbers with 14
significant digits. For display purposes, such numbers are rounded to
a maximum of 12 significant digits.
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 12
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 1.235 E 4
Modes
This section describes the modes of the TI - 89 / TI - 92 Plus and
lists the possible settings of each mode. These mode settings
are displayed when you press
3 .
Graph
Current Folder
Note: For detailed
information about using
folders, see Chapter 5.
Display Digits