Texas Instruments PLUS TI-89 - Manual (Page 163)

146 Chapter 9: Sequence Graphing
09SEQUEN.DOC TI-89/TI-92 Plus: Sequence Graphing (English) Susan Gullord Revised: 02/23/01 10:59 AM Printed: 02/23/01 2:14 PM Page 146 of 14
From the Y= Editor, Axes:
¦ Depending on the current Axes
setting, some items may be
dimmed.
¦ To exit without making any
changes, press N.
Item Description
Axes TIME — Plots u(n) on the y axis and n on the x axis.
WEB — Plots u(n) on the y axis and u(n - 1) on the
x axis.
CUSTOM — Lets you select the x and y axes.
Build Web Active only when Axes = WEB , this specifies whether a
web is drawn manually ( TRACE ) or automatically
( AUTO ).
Refer to page 147 for more information.
X Axis and
Y Axis
Active only when Axes = CUSTOM , these let you select
the value or sequence to plot on the x and y axes.
Refer to page 150 for more information.
To change any of these settings, use the same procedure that you use
to change other types of dialog boxes, such as the
MODE dialog box.
Setting Axes for Time, Web, or Custom Plots
For sequences only, you can select different types of axes for
the graph. Examples of the different types are given later in
this chapter.
Displaying the
AXES Dialog Box