Chapter 17: Activities 489
Graphing Cobweb AttractorsGraphing Cobweb AttractorsGraphing Cobweb AttractorsGraphing Cobweb Attractors
Problem
ProblemProblem
Problem
Using Web format, you can identify points with attracting and repelling behavior in
sequence graphing.
Procedure
ProcedureProcedure
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 = KX(1NX).
u(n)=Ku(nN1)(1Nu(nN1))
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