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Re: Asymptote mystery...

  • To: mathgroup at smc.vnet.net
  • Subject: [mg38846] Re: Asymptote mystery...
  • From: Hendrik van Hees <hees at physik.uni-bielefeld.de>
  • Date: Thu, 16 Jan 2003 03:18:41 -0500 (EST)
  • References: <b032u1$mvn$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Mike Summers wrote:

> It seems to me that this:
> 
> f[x] = (x + 2)/(Abs[x] - 2)
> 
> 
> should show asymptotes at 2 & -2.

Why should it have an asymptote at -2? Your function can be written as

f[x_]=If[x>0,(x+2)/(x-2),-1]

So it's constant along the negative real axis.

-- 
Hendrik van Hees                        Fakultät für Physik 
Phone: +49 521/106-6221                 Universität Bielefeld 
Fax:   +49 521/106-2961                 Universitätsstraße 25 
http://theory.gsi.de/~vanhees/          D-33615 Bielefeld 


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