box% python Python 3.8.6 (default, Sep 30 2020, 04:00:38) [GCC 10.2.0] on linux Type "help", "copyright", "credits" or "license" for more information. >>> from cmath import * >>> log((1 + 4.2j)/(1 - 4.2j)) / 2j (1.3370531459259951+2.7755575615628914e-17j) >>> atan(4.2) (1.3370531459259951+0j) >>>
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