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Re: Plot and filling option

  • To: mathgroup at smc.vnet.net
  • Subject: [mg94609] Re: Plot and filling option
  • From: Szabolcs <szhorvat at gmail.com>
  • Date: Wed, 17 Dec 2008 06:35:31 -0500 (EST)
  • References: <gi821v$gdr$1@smc.vnet.net>

On Dec 16, 12:05 pm, Pat <pbouge... at lameta.univ-montp1.fr> wrote:
> Hello everyone.
>
> I need some help to make a nice plot for my teaching.
>
> I'd like to graph the following interval:
> 0 < x < 1
> 0 < y < 3
> 0 < x y < 2.
>
> I did this:
>
> Plot[{3, 2/x}, {x, 0, 4}, AxesLabel -> {"x", "y"},
>  Prolog -> {Line[{{1, 0}, {1, 4}}]}, Filling -> {1 -> Top, 2 -> Top},
>  PlotRange -> {0, 4}]
>
> But I have no idea how I can fill the right side of the vertical line
> X=1.
>
> If you have any suggestions. Maybe I should write another code.
>

Here's one way, Pat:

RegionPlot[
 0 < x < 1 && 0 < y < 3 && 0 < x y < 2, {x, -0.5, 1.5}, {y, -.5, 3.5}]


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