In Python 3.6, why does a negative number to the power of a fraction return nan when in a numpy array?

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Track title: Thinking It Over

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Chapters
00:00 Question
01:50 Accepted answer (Score 10)
03:29 Answer 2 (Score 0)
03:53 Thank you

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Full question
https://stackoverflow.com/questions/4902...

Question links:
[NumPy official quickstart guide]: https://docs.scipy.org/doc/numpy-dev/use...
[NumPy, RuntimeWarning: invalid value encountered in power
]: https://stackoverflow.com/questions/4538...

Accepted answer links:
[documentation]: https://docs.scipy.org/doc/numpy/referen...

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Tags
#python #numpy

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