The algorithm to calculate the fractional power in MATLAB?

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Choszit Lee 2017-4-15

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https://ww2.mathworks.cn/matlabcentral/answers/335487-the-algorithm-to-calculate-the-fractional-power-in-matlab

评论： Choszit Lee 2017-4-19

采纳的回答： the cyclist

在 MATLAB Online 中打开

>> (-1).^(2/3)

ans =

-0.5000 + 0.8660i

>> ((-1).^2).^(1/3)

ans =

I tried to calculate the fractional power 2/3 of the negative -1, then I found the results above...Orz...Could anyone help me to understand this issue? THX.

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the cyclist 2017-4-15

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编辑：the cyclist 2017-4-15

This is explained in the documentation for power (especially the "Find Roots of Number" section) and nthroot.

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Choszit Lee 2017-4-19

Thanks for your kindness~It's really helpful.

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