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Re: exclusions

  • To: mathgroup at smc.vnet.net
  • Subject: [mg86378] Re: exclusions
  • From: "David Park" <djmpark at comcast.net>
  • Date: Sun, 9 Mar 2008 05:08:11 -0500 (EST)
  • References: <fqtqp5$db0$1@smc.vnet.net>

It's a bit of a mystery because the Exclusions Help page doesn't exactly 
explain this. However, using equations generally works better than just 
giving values.

Plot[x/Log[x], {x, 0, 10}, PlotRange -> {-5, 10},
 Exclusions -> {x == 1}, ExclusionsStyle -> Red]

-- 
David Park
djmpark at comcast.net
http://home.comcast.net/~djmpark/



"Jaccard Florian" <Florian.Jaccard at he-arc.ch> wrote in message 
news:fqtqp5$db0$1 at smc.vnet.net...
> Hello!
>
> Does somebody understand why this works fine :
>
> Plot[Tan[x], {x, 0, Pi},
>   Exclusions -> Pi/2,
>   ExclusionsStyle -> Red]
>
> (I obtain a red asymptote)
>
> And this doesn't work like I logically expect?
>
> Plot[x/Log[x], {x, 0, 10},
>   PlotRange -> {-5, 10},
>   Exclusions -> 1,
>   ExclusionsStyle -> Red]
>
> (I obtain no asymptote at all)
>
> $Version
>
> "6.0 for Microsoft Windows (32-bit) (June 19, 2007)"
>
> Thank's for all feedback.
>
> Florian Jaccard
>
> 



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