4-10 Function Graphing
To leave the Window screen:
¦Select another screen by pressing the appropriate key,
such as , or (.
¦Press 2 . to return to the Home screen.
To store to a Window variable from the Home screen or from
a program, begin on a blank line.
1. Enter the value (which can be an expression) that you
want to store.
2. Press §.
3. Press L to display the VARS menu.
4. Select WINDOW... to display the Window variables.
5. Select the Window variable. The name of the variable is
copied to the cursor location.
6. Press ¸ to complete the instruction.
Note: You can use a Window variable in an expression by
performing steps 3, 4, and 5.
The variables @X and @Y define the distance between the
centers of two adjoining pixels on a graph (graphing
accuracy).
(XMAX – XMIN)(
YMAX – YMIN)
@X = @Y =
62 46
@X and @Y are not on the Window screen; however, they are
accessible through the VARS WINDOW... menu. @X and @Y are
calculated from XMIN, XMAX, YMIN, and YMAX when a graph
is displayed.
You can store values directly to @X and @Y (7 and 8 on the
VARS WINDOW... menu), in which case XMAX and YMAX are
immediately calculated from @X, XMIN, @Y, and YMIN.
Leaving the
Window Screen
Storing to a
Window Variable
from the Home
Screen or a
Program
@X and @Y