Re: Asymptote strangeness...
- To: mathgroup at smc.vnet.net
- Subject: [mg38862] Re: Asymptote strangeness...
- From: "David W. Cantrell" <DWCantrell at sigmaxi.org>
- Date: Thu, 16 Jan 2003 03:20:57 -0500 (EST)
- References: <b033br$n11$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Mike Summers <mike at miscanthus.net> wrote:
> It seems to me that this:
>
> f[x] = (x + 2)/(Abs[x] - 2)
>
> should have asymptotes at 2 & -2.
>
> Plot[Evaluate[f[x]], {x, -5, 5}] only shows the asymptote at 2.
>
> Suggestions?
Mainly, that you should re-examine why you think that it should have a
vertical asymptote at -2. There should be no asymptote there because
-2 is a first-degree zero of _both_ numerator and denominator.
David