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Re: Complex conjugate differentiation

  • To: mathgroup at smc.vnet.net
  • Subject: [mg107215] Re: [mg107163] Complex conjugate differentiation
  • From: "David Park" <djmpark at comcast.net>
  • Date: Fri, 5 Feb 2010 03:26:08 -0500 (EST)
  • References: <15081425.1265283598788.JavaMail.root@n11>

D[z Conjugate[z], Conjugate[z]]
z


David Park
djmpark at comcast.net
http://home.comcast.net/~djmpark/ 


From: Paperorbifold [mailto:kgodelNOSPAM at liberoNOSPAM.it] 


In[1]:=D[z z*, z*]
Out[1]=z
where z*=Conjugate[z], while
In[2]:=D[z z*, z]
Out[2]=Conjugate[z] + z Conjugate'[z]
My question is: which is the best way to get as output
Out[2]=Conjugate[z]?
Should I properly define StarProduct or is there another even
straightforward solution?
Thanks a lot.

-- 
...and I will make them pay for
what they've done! (J.L. Picard)




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