In order to see the effects of a ZOOM option,
a graph must already be displayed on the screen. To learn how to
enter and graph a function, go to Graphing
a Function . For example, the function 
= 
is graphed
below.
The ZOOM 8:ZInteger option allows the user to select a new VIEWING RECTANGLE that has a selected center, is squared, and Xscl and Yscl are set to 10. The function performs a Zoom Out to this new squared window. To use the ZInteger operation, press the ZOOM key, then press 8, and the screens below will appear.
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Next, locate what is to be the center of the new VIEWING RECTANGLE by moving the cursor to that location with the ARROW keys. Below, a point close to (1.06,0.968) has been chosen as the center. Press ENTER to view the results. The resulting VIEWING RECTANGLE is [-46,48,10] X [-30,32,10].
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