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Simplify expression like " Conjugate[Sqrt[z]] " for z>0

  • To: mathgroup at smc.vnet.net
  • Subject: [mg119652] Simplify expression like " Conjugate[Sqrt[z]] " for z>0
  • From: liblenovo <liblenovo at gmail.com>
  • Date: Thu, 16 Jun 2011 04:00:43 -0400 (EDT)

In[86]:=Simplify[Conjugate[Sqrt[-(t Cos[2 kx] Cos[ky]) + Cos[kx] +
M] ], -(t Cos[2 kx] Cos[ky]) + Cos[kx] + M > 0]

Out[86]= Sqrt[-t cos(2 kx) cos(ky)+cos(kx)+M]^\[Conjugate]

I don't want that  ^\[Conjugate], why it is there?


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