Re: exclusions

*To*: mathgroup at smc.vnet.net*Subject*: [mg86359] Re: exclusions*From*: Helen Read <hpr at together.net>*Date*: Sun, 9 Mar 2008 05:03:40 -0500 (EST)*References*: <fqtqp5$db0$1@smc.vnet.net>*Reply-to*: HPR <read at math.uvm.edu>

Jaccard Florian wrote: > 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) I don't know why one works and the other does not (I have found Exclusions to be a little squirrelly sometimes), but the following does work. Plot[x/Log[x], {x, 0, 10}, PlotRange -> {-5, 10}, Exclusions -> {x == 1}, ExclusionsStyle -> Red] -- Helen Read University of Vermont