Sharp EL-9900 User Manual

=

 :

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.

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.

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:

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.

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.

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.