Texas Instruments TI-84 - Manual (Page 492)

Chapter 17: Activities 489
Graphing Cobweb Attractors Graphing Cobweb Attractors Graphing Cobweb Attractors Graphing Cobweb Attractors
Problem Problem Problem Problem
Using Web format, you can identify points with attracting and repelling behavior in
sequence graphing.
Procedure Procedure Procedure Procedure
1. Press
z. Select
Seq and the default mode settings. Press
y .. Select
Web format and the default format settings.
2. Press
o. Clear all functions and turn off all stat plots. Enter the sequence that
corresponds to the expression Y = K X(1 NX).
u(n)=Ku(n N 1)(1 N u(n N 1))
u(nMin)=.01
3. Press
y 5 to return to the home screen, and then store
2.9 to K .
4. Press
p. Set the window variables.
5. Press
r to display the graph, and then press ~ to trace the cobweb. This is a
cobweb with one attractor.
nMin=0
nMax=10
PlotStart=1
PlotStep=1 Xmin=0
Xmax=1
Xscl=1 Ymin= M .26
Ymax=1.1
Yscl=1