Using Web Plots To Illustrate Convergence - Texas Instruments TI-82 STATS Manual Book

Using Web Plots to Illustrate Convergence

Example:
Convergence
6–12 Sequence Graphing
1. Press o in
Seq
sure the graph style is set to í (dot), and then define
and as shown below.
u(nMin)
2. Press y [
FORMAT
3. Press p and set the variables as shown below.
nMin=1
nMax=25
PlotStart=1
PlotStep=1
4. Press s to graph the sequence.
5. Press y [
FORMAT
6. Press p and change the variables below.
Xmin=L10
7. Press s to graph the sequence.
8. Press r, and then press ~ to draw the web. The
displayed cursor coordinates
) change accordingly. When you press ~, a new
(
Y u(n)
value is displayed, and the trace cursor is on the sequence.
When you press ~ again, the
the cursor moves to the
as you trace the web.
mode to display the sequence
] Í to set
Time
Xmin=0
Xmax=25
Xscl=1
] and select the
Web
Xmax=10
, (
n X u(nN1)
value remains the same, and
n
reference line. This pattern repeats
y=x
editor. Make
Y=
,
nMin u(n)
axes format.
Ymin=L10
Ymax=10
Yscl=1
axes setting.
), and
n