On Wed, Aug 31, 2011 at 10:20 AM, Maarten Derickx
<m.derickx.stud...@gmail.com> wrote:
> There was one very concrete thing that I found out recently that would
> probably have set me off if I was a matlab user trying to switch to sage.
> sage: (-2.0)^(1/3)
> 0.629960524947437 + 1.09112363597172*I
(1) If I remember correctly, things are this way because Paul
Zimmerman was "set off" by the above returning a real root, which it
used to do (the default in Maxima, by the way). He had some very good
consistency reasons for preferring the complex branch by default.
(2) Just out of curiosity, did you even *try* the above in Matlab!?
You might be surprised to find that it returns the same thing as Sage!
< M A T L A B >
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>> (-2.0)^(1/3)
ans =
0.6300 + 1.0911i
>
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--
William Stein
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University of Washington
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