Texas Instruments TI-82 STATS

3.12 Function Graphing
82533F~1.DOC TI-83 international English Bob Fedorisko Revised: 10/26/05 1:20 PM Printed: 10/27/05 1:55
PM Page 12 of 28
82533F~1.DOC TI-83 international English Bob Fedorisko Revised: 10/26/05 1:20 PM Printed: 10/27/05 1:55
PM Page 12 of 28
To store a value, which can be an expression, to a window
variable, begin on a blank line and follow these steps.
1. Enter the value you want to store.
2. Press ¿.
3. Press  to display the
VARS menu.
4. Select 1:Window to display the Func window variables (X/Y
secondary menu).
• Press ~ to display the
Par and Pol window variables (T/q
secondary menu).
• Press ~ ~ to display the
Seq window variables (U/V/W
secondary menu).
5. Select the window variable to which you want to store a
value. The name of the variable is pasted to the current
cursor location.
6. Press Í to complete the instruction.
When the instruction is executed, the TI-82 STATS stores the
value to the window variable and displays the value.
The variables @X and @Y (items 8 and 9 on the VARS
(1:Window) X/Y secondary menu) define the distance from the
center of one pixel to the center of any adjacent pixel on a graph
(graphing accuracy).
@X and @Y are calculated from Xmin,
Xmax, Ymin, and Ymax when you display a graph.
@X =
(Xmax N Xmin)
94
@Y =
(Ymax N Ymin)
62
You can store values to @X and @Y. If you do, Xmax and Ymax
are calculated from @X, Xmin, @Y, and Ymin.
Setting the Viewing Window Variables (continued)
Storing to a
Window Variable
from the Home
Screen or a
Program
@X and @Y