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?

**Follow-Ups**:**Re: " for z>0***From:*Vivek Joshi <vivekjjoshi29@gmail.com>