Comment #6 on issue 564 by [email protected]: series expansion of acosh
and acoth
http://code.google.com/p/sympy/issues/detail?id=564
Yes, the standard trig functions have exactly the same multiple value
issues. The branch cuts for them are similar. Mathworld has a summary of
them here:
http://mathworld.wolfram.com/InverseTrigonometricFunctions.html
I can add documentation for them too but really, it looks like sympy always
takes the principal values for the functions which is what a user might
reasonably expect.
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