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Re: Bug in Mathematica ?

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  • Subject: [mg109322] Re: Bug in Mathematica ?
  • From: "David Park" <djmpark at>
  • Date: Thu, 22 Apr 2010 03:29:05 -0400 (EDT)

The surer and more stable method for manipulating complex expressions is
always ComplexExpand.

Conjugate[a b]; 
ComplexExpand[%, {b}, TargetFunctions -> {Conjugate}] 
a Conjugate[b] 


Conjugate[a b]; 
Simplify[%, a \[Element] Reals] 
a Conjugate[b] 

David Park
djmpark at 

From: slawek [mailto:a at b.c] 

In[1] := Im[a] ^= 0; Conjugate[a b]

Out[1] := Conjugate[a b]

It is not funny, Mathematica 6 properly evaluates the result 

a Conjugate[b]

What happens?


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