Operation Manual

A-28 Tables
8299APPA.DOC TI-82, Appendix A, English Bob Fedorisko Revised: 02/09/01 9:35 AM Printed:
02/09/01 12:43 PM Page 28 of 28
Table of Variables
The variables listed below are used by the TI
.
82 in various ways. Some have
restrictions on their use.
User Variables
The variables
A
through
Z
and
q
are defined as real numbers. You may store
to them. However, the TI
.
82 can update
X
,
Y
,
R
,
q
, and
T
during graphing,
so you may wish to avoid using these variables for nongraphing activities.
The variables
L
1
through
L
6
are defined as lists. You cannot store another
type of data to them.
The variables
ã
A
ä
,
ã
B
ä
,
ã
C
ä
,
ã
D
ä
, and,
ã
E
ä
are defined as matrices. You cannot
store another type of data to them.
The variables
Pic1
through
Pic6
are pictures. You cannot store another type
of data to them.
The variables
GDB1
through
GDB6
are graph databases. You cannot store
another type of data to them.
You can store any string of characters, functions, instructions, or variable
names to the functions
Y
n
,
X
n
T
,
r
n
,
U n
, and
V n
directly or through the
Y=
editor. The validity of the string is determined when the function is
evaluated.
System Variables
The variables below must be real numbers. You may store to them. The
TI
.
82 can update some of them, as the result of a
ZOOM
, for example, so
you may wish to avoid using these variables for nongraphing activities.
¦
Xmin
,
Xmax
,
Xscl
,
@
X
,
XFact
,
Tstep
,
UStart
,
n Min
, and other
WINDOW
variables.
¦
ZXmin
,
ZXmax
,
ZXscl
,
ZTstep
,
ZU n Start
,
Z n Min
, and other
ZOOM
MEMORY
variables.
The variables below are reserved for use by the TI
.
82. You cannot store to
them.
¦
n
,
v
,
minX
,
G
x
,
a
,
r
,
RegEQ
,
x
1
,
y
1
, and other statistical result variables.
¦
Q
1
,
Med
,
Q
3
.
You can store to
U
n
-
1
and
V
n
-
1
outside of graphing, but you cannot store to
n
outside of graphing.