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### Get variants of complex cube-root

I found-out that complex cube-root can have 3 variants (see http://en.wikipedia.org/wiki/Cube_root)

But if I try in SageMath to do

(-1)^(1/3)


SageMath return (-1)^(1/3). When I try

(-1)^(1/3).n()


SageMath gives me numerical approximation of the one root (not real)...

How I can get all variants of complex cube-root without numerical approximation?

Thanks! P.S. Sorry for poor English...

 2 retagged tmonteil 24043 ●27 ●175 ●443 http://wiki.sagemath.o...

### Get variants of complex cube-root

I found-out that complex cube-root can have 3 variants (see http://en.wikipedia.org/wiki/Cube_root)

But if I try in SageMath to do

(-1)^(1/3)


SageMath return (-1)^(1/3). When I try

(-1)^(1/3).n()


SageMath gives me numerical approximation of the one root (not real)...

How I can get all variants of complex cube-root without numerical approximation?

Thanks! P.S. Sorry for poor English...