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MathGroup Archive 2007

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Exclusions in V6

  • To: mathgroup at
  • Subject: [mg78275] Exclusions in V6
  • From: "David Park" <djmpark at>
  • Date: Wed, 27 Jun 2007 05:31:46 -0400 (EDT)

The new Exclusions option in V6 is quite nice.

The following works:

Plot[Tan[x], {x, -3 \[Pi], 3 \[Pi]}, Exclusions -> Cos[x] == 0]

However, in view of the Exclusions Help page:

"Exclusions -> Automatic excludes all subregions where discontinuities are 
found in functions being plotted. The discontinuities can involve either 
finite or infinite jumps in function values."

I don't understand why the following fails.

Plot[Tan[x], {x, -3 \[Pi], 3 \[Pi]}, Exclusions -> Automatic]

David Park
djmpark at

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