Sharp EL-9900 - Manual (Page 65)

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Chapter 4: Basic Graphing Features — Basic Keyboard
B FACTOR
Use this menu to set the vertical and horizontal zooming factor.
The factor set under this menu directly affects the zoom rate of
the 3 In and 4 Out sub-menu tools under the ZOOM menu, as
described above.
To set the zooming factor, do the following:
1. Within the
B FACTOR menu,
press E to
activate the setup
tool.
2. When the “Zoom factor” window appears, the cursor
is automatically placed at “X_Fact=”. The default
zoom factor is 4; enter the required value here.
3. Pressing E after entering a value will switch the
cursor position to “Y_Fact=”. Enter the required
zooming factor, and press E.
4. To go back to the ZOOM menu, press the Z
key.
C POWER
1 x 2 Use this zooming tool when the equation contains a
form of “ x 2 ”.
2 x –1 Use this zooming tool when the equation contains a
form of “ x - 1 ”.
3 x Use this tool to zoom correctly when the equation
contains a form of “ x ”.
D EXP
1 10 X Use this tool when the equation contains a form of
“10 x ”.
2 log X Use this tool when the equation contains a form of “log
x ”.