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RE: (-8)^(1/3)


LuisMa,

Needs["Miscellaneous`RealOnly`"]

(-8)^(1/3)
-2

Ted Ersek has a nice package on MathSource called SwitchableRealOnly. It
works somewhat better than RealOnly and also allows you to turn RealOnly on
and off without having to kill the kernel.

David Park
djmp at earthlink.net
http://home.earthlink.net/~djmp/


> From: LuisMa [mailto:nospam at newsranger.com]
To: mathgroup at smc.vnet.net
>
> When I enter
>
> (-8)^(1/3)
>
> Mathematica answer
>
> 1 + 1.73205i,
>
> but I need
>
> (-8)^(1/3) = -2
>
> How can I get it?
>
>



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