17-8 Applications
8317APPS.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 1:00 PM Printed: 02/19/01 1:39 PM
Page 8 of 20
Using Web format, you can identify points with attracting
and repelling behavior in sequence graphing.
1. Press z. Select Seq and the default mode settings.
Press y [FORMAT]. 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(1NX).
u(
n
)=Ku(
n
N1)(1Nu(
n
N1))
u(
n
Min)=.01
3. Press y [QUIT] to return to the home screen, and then
store 2.9 to K.
4. Press p. Set the window variables.
n
Min=0 Xmin=0 Ymin=M.26
n
Max=10 Xmax=1 Ymax=1.1
PlotStart=1 Xscl=1 Yscl=1
PlotStep=1
5. Press r to display the graph, and then press ~ to
trace the cobweb. This is a cobweb with one attractor.
6. Change K to 3.44 and trace the graph to show a cobweb
with two attractors.
7. Change K to 3.54 and trace the graph to show a cobweb
with four attractors.
Graphing Cobweb Attractors
Problem
Procedure