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MathGroup Archive 2007

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Strange RegionPlot

  • To: mathgroup at smc.vnet.net
  • Subject: [mg81532] Strange RegionPlot
  • From: Bruce Colletti <vze269bv at verizon.net>
  • Date: Wed, 26 Sep 2007 06:53:50 -0400 (EDT)

Re 6.0.1 under Windows XP.

The region returned by:

RegionPlot[x + y < 4 && x - y > 3, {x, -20, 25}, {y, -20, 10}]

should be triangular.  Yet the apex is a short line segment and not a vertex.  

What creates this segment, and what must one do to get the vertex?  Thankx.

Bruce


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