Operation Manual

10 Getting Started
8200GETS.DOC TI-82, Getting Started, English Bob Fedorisko Revised: 02/09/01 8:38 AM Printed:
02/09/01 12:35 PM Page 10 of 14
Changing the Viewing WINDOW
The viewing WINDOW defines the portion of the coordinate plane that appears in
the display. The values of the WINDOW variables determine the size of the
viewing WINDOW. You can view and change these values.
1. Press
p
to display the
WINDOW
variables
edit screen. You can view and edit the values of
the
WINDOW
variables here.
The standard
WINDOW
variables define the
viewing
WINDOW
as shown.
Xmin
,
Xmax
,
Ymin
,
and
Ymax
define the boundaries of the display.
Xscl
and
Yscl
define the distance between tick
marks on the
X
and
Y
axis.
Xmax
Ymin
Ymax
Xscl
Yscl
Xmin
2. Press
†
to move the cursor onto the line to
define
Xmin
. Press
0
Í
.
3. You can enter expressions to define values in
the
WINDOW
editor. Press
200
¥
2
.
4. Press
Í
. The expression is evaluated, and
100
is stored in
Xmax
. Press
10
Í
to set
Xscl
as
10
.
5. Press
0
Í
500000
Í
100000
Í
to
define the
Y
WINDOW
variables.