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MathGroup Archive 2004

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Hyperbolic function identity

  • To: mathgroup at smc.vnet.net
  • Subject: [mg50932] Hyperbolic function identity
  • From: carlos at colorado.edu (Carlos Felippa)
  • Date: Tue, 28 Sep 2004 00:58:52 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

Why 

   FullSimplify[ArcCosh[1+z^2/2]-2*ArcSinh[z/2],z>0];

does not evaluate to 0?


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