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MathGroup Archive 2005

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Simplification question

  • To: mathgroup at smc.vnet.net
  • Subject: [mg59032] Simplification question
  • From: "snoofly" <snoofly at snoofly.com>
  • Date: Wed, 27 Jul 2005 01:25:00 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

Can someone explain this to me please.

Clear[m]

Simplify[Sin[3 m Pi], Assumptions -> m \[Element] Integers]
0

Simplify[Cos[3 m Pi], Assumptions -> m \[Element] Integers]

Cos[3 m \[Pi]]

I'm not sure why Mathematica cannot deduce that the second simplification 
should be (1)^m.


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