Sharp EL-9900 Operation Manual page 63

Chapter 4: Basic Graphing Features — Basic Keyboard
= : The expression can be represented as a graph.
= : The expression cannot be drawn as a graph.
• Move the cursor pointer to the "=" sign and press E to
change between to-draw and not-to-draw.
Note: To switch the window back to the calculation screen, simply press
the # key.
G:
Draws a full-screen graph based on the equation(s) entered in the
Graph Equation window. To cancel the graph drawing, press
O.
Note: If no equations are entered in the Graph equation window, only
the vertical (Y) and horizontal (X) axis will be displayed upon
pressing the G key.
T:
Displays the graph values in a table. The default sample incre-
ment value of the graph's X axis is "1".
Z:
Displays the ZOOM menu. Within the ZOOM menu, various
preferences can be set for the graph appearance on zooming in/
out .
The menu items with each function and the sub-menu items are
described below:
A ZOOM
There are a myriad of tools under this menu item, by which the
graph can be zoomed in/out in various styles. Press "A" within the
ZOOM menu to select this menu item.
1 Auto
Note: The "Auto" sub-menu item is directly affected by how the WIN-
DOW items are set up. Refer to the W key section in this
chapter to learn how to set up the Xmin and Xmax items.
According to the WINDOW setup, the graph will be
zoomed in by adjusting the "Ymin" (the minimum Y
value) and "Ymax" (the maximum Y value) according to
the "Xmin" (the minimum X value) and "Xmax" (the
maximum X value). When this item is selected, the
graph will automatically be redrawn.
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