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Index I-7
T
(Cont.)
Turning functions on and off, 1
-
19,
4
-
8, 5
-
4
Turning the TI
-
80 on and off, 3,
1
-
2
2-VAR STATS
, 9
-
14, 9
-
15, A
-
19
Two-variable statistics, 9
-
14, 9
-
15,
A
-
19
U
UNDEFINED
error, B
-
13
V
Variables, x, 1
-
12, 1
-
13, A
-
26
VARS
menu, 1
-
19
VERTICAL
, 7
-
3, 7
-
5, A
-
19
Vertical line, 7
-
5
Viewing rectangle, viewing window.
See
Window
W
Warranty information, B
-
14, B
-
16
Window, 11, 1
-
19, 4
-
9 to 4
-
10,
4
-
15 to 4
-
18, 5
-
3 to 5
-
6,
9
-
21, A
-
26, B
-
8
WINDOW RANGE
error, B
-
13
X
X
,
T
key, 1
-
8, 4
-
5, 5
-
3
v
, 9
-
17, A
-
26
X
, 4
-
5, 4
-
11 to 4
-
13, 6
-
3, A
-
26, B
-
11
X
n
T
functions, 1
-
19, 5
-
3, A
-
26
XFACT
variable, 4
-
16
XL
(X-list), 9
-
15, 9
-
18, 9
-
20
XMAX
,
XMIN
,
XSCL
, 4
-
9, 4
-
13, 4
-
9,
4
-
10, 4
-
12, 4
-
17, 5
-
2, 5
-
4,
9
-
19, A
-
26, B
-
8, B
-
12, B
-
13
X/Y
(
VARS
) menu, 1
-
19, 9
-
17
XYLINE
, 9
-
18, 9
-
20, 9
-
21
Y
w
, 9
-
17, A
-
26
Y
, 4
-
11 to 4
-
13, A
-
26, B
-
11
Y
(Cont.)
Y-VARS
menu, 1
-
19
Y
n
, 1
-
19, 4
-
5 to 4
-
7, 10
-
12, A
-
26
Y1
,
Y2
,
Y3
, 9
-
14, 9
-
15, A
-
26
Y
n
T
functions, 1
-
19, 5
-
3, A
-
26
Y=
editor, 1
-
19, 4
-
5 to 4
-
7, 5
-
3, 6
-
4,
A
-
26
Y=
functions.
See
Y
n
,
X
n
T
, functions
YFACT
variable, 4
-
16, 4
-
18
YL
(Y-list), 9
-
15, 9
-
18, 9
-
20
YMAX
,
YMIN
,
YSCL
, 4
-
9, 4
-
10, 4
-
12,
4
-
13, 4
-
17, 5
-
2, 5
-
4, 9
-
19,
A
-
26, B
-
8, B
-
12, B
-
13
Z
ZBOX
, 4
-
15, A
-
19
ZDECIMAL
, 4
-
15, 4
-
17, A
-
19
ZOOM
, 13, 1
-
18, 4
-
15 to 4
-
18,
5
-
6
ZOOM
error, B
-
13
ZOOM FACTORS
, 4
-
18
ZOOM IN
, 4
-
15, 4
-
16
ZOOM
menu, 4
-
15 to 4
-
17
ZOOM OUT
, 4
-
15, 4
-
16
ZSQUARE
, 4
-
2, 4
-
15, 4
-
17, A
-
19
ZSTANDARD
, 4
-
15, 4
-
17, 5
-
6, A
-
19
ZTRIG
, 4
-
15, 4
-
17, A
-
19
@
TBL
, 6
-
2, 6
-
3, 6
-
5, 4
-
18, 4
-
19, 6
-
6
@
X
,
@
Y
, 4
-
10, 4
-
17, A
-
26, B
-
8
H
, 2
-
9
s
X
,
s
Y
, 9
-
17, A
-
26
G
(
VARS
) menu, 1
-
19, 9
-
17
G
X
,
G
Y
,
G
X
2
,
G
Y
2
,
G
XY
, 9
-
17, A
-
26
q
, 1
-
12, A
-
26