3-12 Function Graphing
8303FUNC.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 12:16 PM Printed: 02/19/01 1:35
PM Page 12 of 28
8303FUNC.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 12:16 PM Printed: 02/19/01 1:35
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-83 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.
Storing to a
Window Variable
from the Home
Screen or a
Program
@X and @Y