Re: Simple Recursive Map
- To: mathgroup at smc.vnet.net
- Subject: [mg35421] Re: Simple Recursive Map
- From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
- Date: Fri, 12 Jul 2002 04:28:33 -0400 (EDT)
- Organization: Universitaet Leipzig
- References: <agjius$24s$1@smc.vnet.net>
- Reply-to: kuska at informatik.uni-leipzig.de
- Sender: owner-wri-mathgroup at wolfram.com
Hi,
iter[{x_, y_}, {a_, b_}] := {y - a*x^2 - 1, b*x}
Nest[iter[#, {a, b}] &, {x0, y0}, 50]
?
Regards
Jens
Reuben wrote:
>
> I have the map
>
> x_n+1=y_n-a*(x_n)^2 - 1
> y_n+1=b*x_n
>
> If I specify a,b, x_0 and y_0, how can I make Mathematica iterate
> through this numerically to give me x_50 and y_50?
>
> Thanks
> Reuben