| Author |
Comment/Response |
RJ Erwin
|
 11/19/01 11:41pm
I guess this is pretty simplistic, but I've just started using Mathematica and I'll be darned if I can figure this out . . .
i'm trying to evaluate two coupled iterated map functions:
y[n_+1]:=y[n+1]=y[n]-.001*x[n]-.001;
x[n_+1]:=x[n+1]=a/(1+(x[n]^2))+y[n];
x[0]=-2;
y[0]=-4;
(where a = constant), and then store the output, over, say, 1000 iterations, in a list. This is really easy to do with Excel, and I was originally hoping to import that data into Mathematica, but I can't come up with any way to do that either. Anyway, how should the functions be defined so that I can do this?
When importing stuff (data on separate lines in a text file), I tried to say:
ReadList["alpha.txt", Number, RecordLists -> True]
and also the Import version, but I kept getting a message saying the file couldn't be found. What's wrong? Thanks.
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