Texas Instruments TITANIUM TI-89 - Manual (Page 325)

Basic Function Graphing 325
Using Zooms to Explore a Graph Using Zooms to Explore a Graph Using Zooms to Explore a Graph Using Zooms to Explore a Graph
The „
Zoom toolbar menu has several tools that let you adjust the viewing window. You
can also save a viewing window for later use.
Overview of the Zoom Menu Overview of the Zoom Menu Overview of the Zoom Menu Overview of the Zoom Menu
Press „ from the Y= Editor, Window Editor, or Graph screen.
Note: If you select a Zoom tool from the Y=Editor or Window Editor, the TI-89 Titanium
automatically displays the Graph screen.
Procedures for using ZoomBox , ZoomIn ,
ZoomOut , ZoomStd , Memory , and SetFactors
are given later in this section.
For more information about the other items,
refer to the Technical Reference module.
Zoom Tool Description
ZoomBox Lets you draw a box and zoom in on that box.
ZoomIn
,
ZoomOut
Lets you select a point and zoom in or out by an amount
defined by SetFactors.
ZoomDec Sets @ x and @ y to .1, and centers the origin.
ZoomSqr Adjusts Window variables so that a square or circle is
shown in correct proportion (instead of a rectangle or
ellipse).