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Re: Re (1)^(3/4) > (1+I)/Sqrt[2] ?
 To: mathgroup at christensen.cybernetics.net
 Subject: [mg594] Re: [mg584] Re[mg557] (1)^(3/4) > (1+I)/Sqrt[2] ?
 From: karl at faepds01.tugraz.ac.at (Karl Unterkofler)
 Date: Thu, 23 Mar 1995 09:17:18 +0100
>> Does anybody know a core or standard package command that makes
>> transformations like (1)^(3/4) > (1+I)/Sqrt[2] ?
>
>There was a simple answer to my question, supplied by Robby Villegas of
>WRI.
>
>Here it is: ComplexExpand.
>
>I missed it because there is nothing like ComplexExpand[(1)^(3/4)] among
>the examples given in The Book. This is a really common need, and I hope
>it will appear as an example in future editions.
I tried
In[422]:= ComplexExpand[(1)^(1/5)] // InputForm
Out[422]//InputForm=Cos[Pi/5] + I*Sin[Pi/5]
But want I want is
Cos[ Pi/5] = (1+ Sqrt[5])/4
Any suggestions?
karl unterkofler
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