Basic Function Graphing 328
Zooming In and Out on a Point
Zooming In and Out on a Point Zooming In and Out on a Point
Zooming In and Out on a Point
•For a ZoomIn, the x variables are divided by xFact, and the y variables are
divided by yFact.
new xmin = xmin/xFact , etc.
•For a ZoomOut, the x variables are multiplied by xFact, and the y variables are
multiplied by yFact.
new xmin = xmin ù xFact , etc.
Changing Zoom Factors
Changing Zoom FactorsChanging Zoom Factors
Changing Zoom Factors
The Zoom factors define the magnification and reduction used by ZoomIn and ZoomOut.
1. From the „ Zoom menu, select 2:ZoomIn
or 3:ZoomOut.
A cursor appears, and the screen
prompts for New Center?
2. Move the cursor to the point where you
want to zoom in or out, and then press
¸.
The TI-89 Titanium adjusts the Window
variables by the Zoom factors defined in
SetFactors.