Operation Manual
3-8 Function Graphing
8203FUNC.DOC TI-82, Chapter 3, English Bob Fedorisko Revised: 02/09/01 9:06 AM Printed: 02/09/01
12:36 PM Page 8 of 24
Defining the Viewing
WINDOW
The WINDOW variables determine the boundaries and other attributes of the
viewing WINDOW. The WINDOW variables are shared by all graphing modes.
TI-82 Viewing WINDOW
The viewing
WINDOW
of the TI
.
82 is the portion of the coordinate plane
defined by
Xmin
,
Xmax
,
Ymin
, and
Ymax
. The distance between tick marks
is defined by
Xscl
for the
X
axis and
Yscl
for the
Y
axis.
Xmax
Ymin
Ymax
Xscl
Yscl
Xmin
Checking the Viewing WINDOW
Press
p
to display the current
WINDOW
variable values. The values
shown here are the standard values.
Changing a WINDOW Variable Value
1. Press
†
to move to the
WINDOW
variable you want to change.
2. To enter a real value (which can be an expression), you may do any of
the following:
¦
Position the cursor and then make the changes.
¦
Press
‘
to clear the value and then enter a new value.
¦
Begin entering a new value. The original value is cleared
automatically when you begin typing.
3. Press
Í
,
†
, or
}
. If you entered an expression, it is evaluated. The
new value is stored.
Xmin
must be less than
Xmax
and
Ymin
must be less than
Ymax
, or you will
get an error message when you press
s
. To turn off the tick marks, set
Xscl=0
or
Yscl=0
.