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MathGroup Archive 2003

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integrat trig radical

  • To: mathgroup at smc.vnet.net
  • Subject: [mg39575] integrat trig radical
  • From: Friedrich Laher <mathefritz at schmieder-laher.de>
  • Date: Mon, 24 Feb 2003 03:10:47 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com

is there any mathematical reason for mathematica, not 1st internally
using
Cos[x/2] = Sqrt[(1 + Cos[x])/2]
before
integrating Sqrt[1 + Cos[x]] ?
It
even refuses to answer True
to
Integrate[Sqrt[1 + Cos[x]],x] == 2*Sqrt[2]*Sin[x/2]
F.



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