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MathGroup Archive 2002

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Re: help: recursive functions

  • To: mathgroup at
  • Subject: [mg32625] Re: help: recursive functions
  • From: Jens-Peer Kuska <kuska at>
  • Date: Fri, 1 Feb 2002 02:02:26 -0500 (EST)
  • Organization: Universitaet Leipzig
  • References: <a3aqpd$4cv$>
  • Reply-to: kuska at
  • Sender: owner-wri-mathgroup at


let the recursion terminate with



*and* never ask for non integer arguments like
Plot[] will do ?




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

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