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MathGroup Archive 2002

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Re: help: recursive functions

  • To: mathgroup at
  • Subject: [mg32621] Re: [mg32616] help: recursive functions
  • From: Andrzej Kozlowski <andrzej at>
  • Date: Fri, 1 Feb 2002 02:02:22 -0500 (EST)
  • Sender: owner-wri-mathgroup at

It's not just a matter of "entering". Obviously you must specify values 
for y[0] and y[1] otherwise your recursion will never end.
As for your other question: you can use the FilledPlot command after 
loading the Graphics`FilledPlot`

On Thursday, January 31, 2002, at 03:45  PM, Okke wrote:

> Hello,
> I'm having some problems with a recursive function.
> Could somebody please help me by telling me how I
> should enter such a function?
> tia,
> This is what I've done so far:
> f[n_]:=Sin[Pi*n*(0.05+(0.0005*n))]
> y[n_]:=1.5*y[n-1]-0.85*y[n-2]+f[n]
> I'm trying to Plot[y[n],{n,0,320}] but that gives me
> an error: $RecursionLimit::reclim: Recursion depth of 256 exceeded.
> btw, is there an option to fill the area under the sine?
> --
> Okke
> remove NOSPAM from my email address to reply
Andrzej Kozlowski
Toyama International University

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