ZOOM 5:ZSquare

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.  

Screen Picture of TI-83 Calculator

The ZOOM 5:ZSquare option allows the user to select a new VIEWING RECTANGLE by changing only one direction, which make objects like circles appear as circles and not eggs.  In this case the standard VIEWING RECTANGLE [-10,10,1] X [-10,10,1] is changed to approximately [-16.1,16.1,1] X  [-10,10,1].  This compensates for the viewing screen being wider than it is tall, thus making a unit in the X direction equal to a unit in the Y direction. That is, the calculator "squares" the VIEWING RECTANGLE.

To select the ZOOM 5:ZSquare option, first press the ZOOM key, and then select 5. 

Screen Picture of TI-83 Calculator
Screen Picture of TI-83 Calculator

 



© 2019, Middle Georgia State University  All rights reserved.