Texas Instruments TI-82 STATS - Page 128

6–10 Sequence Graphing
82EAB9~1.DOC TI-83 international English Bob Fedorisko Revised: 10/28/05 9:28 AM Printed: 10/28/05 9:28
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ZOOM operations in Seq graphing work the same as in Func
graphing. Only the X (Xmin, Xmax, and Xscl) and Y (Ymin,
Ymax, and Yscl) window variables are affected.
PlotStart, PlotStep, nMin, and nMax are only affected when
you select
ZStandard. The VARS Zoom secondary menu ZU
items 1 through 7 are the ZOOM MEMORY variables for Seq
graphing.
The only
CALC operation available in Seq graphing is value.
• When
Time axes format is selected, value displays Y (the
u(n) value) for a specified n value.
• When
Web axes format is selected, value draws the web and
displays Y (the u(n) value) for a specified n value.
• When
uv, vw, or uw axes format is selected, value displays
X and Y according to the axes format setting. For example,
for uv axes format, X represents u(n) and Y represents v(n).
To enter the sequence names
u, v, or w, press y [u], [v], or
[
w]. You can evaluate these names in any of three ways.
• Calculate the
nth value in a sequence.
• Calculate a list of values in a sequence.
• Generate a sequence with u(nstart,nstop[,nstep]). nstep is
optional; default is 1.
Exploring Sequence Graphs (continued)
ZOOM
CALC
Evaluating u, v,
and w