Graphing Web Plots - Texas Instruments TI-84 PLUS - Graphing Calculator Manual Book

• When Time axes format is selected,
• When Web axes format is selected,
specified value.
n
• When , , or
uv vw uw
format setting. For example, for
Evaluating u, v, and w
To enter the sequence names
names in any of three ways.
• Calculate the th value in a sequence.
n
• Calculate a list of values in a sequence.
• Generate a sequence with

Graphing Web Plots

Graphing a Web Plot
To select Web axes format, press y . ~ Í. A web plot graphs
which you can use to study long-term behavior (convergence, divergence, or oscillation) of a
recursive sequence. You can see how the sequence may change behavior as its initial value
changes.
Valid Functions for Web Plots
When Web axes format is selected, a sequence will not graph properly or will generate an error.
• It must be recursive with only one recursion level (
• It cannot reference
• It cannot reference any defined sequence except itself.
Displaying the Graph Screen
In Web format, press s to display the graph screen. The TI-84 Plus:
• Draws a reference line in
y=x
• Plots the selected sequences with
value
value
axes format is selected,
axes format, X represents
uv
, press y
, or
u v, w
u(nstart,nstop[,nstep])
directly.
n
format.
AxesOn
as the independent variable.
u(n N 1)
displays Y (the value) for a specified
u(n)
draws the web and displays Y (the
displays X and Y according to the axes
value
u(n)
, y , or y
[u] [v]
. is optional; default is 1.
nstep
but not
u(n N 1)
Chapter 6: Sequence Graphing
value.
n
value) for a
u(n)
and Y represents
v(n)
. You can evaluate these
[w]
versus
u(n) u(n N
).
u(n N 2)
.
,
1)
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