Texas Instruments PLUS TI-89 - Manual (Page 541)

524 Appendix A: Functions and Instructions
8992APPA.DOC TI-89 / TI-92 Plus: Appendix A (US English) Susan Gullord Revised: 02/23/01 1:48 PM Printed: 02/23/01 2:21 PM Page 524 of 132
ZoomOut CATALOG
ZoomOut
Displays the Graph screen, lets you set a
center point for a zoom out, and updates the
viewing window.
The magnitude of the zoom is dependent on
the
Zoom factors xFact and yFact . In 3D Graph
mode, the magnitude is dependent on xFact ,
yFact , and zFact .
In function graphing mode:
1.25xù cos(x)! y1(x) ¸ Done
ZoomStd:ZoomOut ¸
¸
ZoomPrev CATALOG
ZoomPrev
Displays the Graph screen, and updates the
viewing window with the settings in use
before the last zoom.
ZoomRcl CATALOG
ZoomRcl
Displays the Graph screen, and updates the
viewing window using the settings stored
with the
ZoomSto instruction.
ZoomSqr CATALOG
ZoomSqr
Displays the Graph screen, adjusts the x or y
window settings so that each pixel represents
an equal width and height in the coordinate
system, and updates the viewing window.
In 3D Graph mode, ZoomSqr lengthens the
shortest two axes to be the same as the
longest axis.
In function graphing mode:
1.25xù cos(x)! y1(x) ¸ Done
ZoomStd ¸
"
ZoomSqr
¸