Texas Instruments TI-84 Plus - ∆X and ∆Y

Chapter 3: Function Graphing 107
• 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-84 Plus stores the value to the window variable
and displays the value.
@X and
X and X and
X and @Y
YY
Y
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.
You can store values to @
X and @Y. If you do, Xmax and Ymax are calculated from @X,
Xmin, @Y, and Ymin.
∆X
Xmax Xmin–()
94
---------------------------------------= ∆Y
Ymax Ymin–()
62
---------------------------------------=