bug in arccotangent function

[Albert Chan]

(10-20-2022 03:27 PM)Roland57 Wrote:  I think its not a bug: both results are correct: arccot ist periodical with period pi

You cannot have *both* right, since acot is one to one function.
It is just software packages may have different definition of acot.
Once defined, it is always one-to-one.

I prefer Mathematica's definition of acot(x) as odd function, even though curve has a discontinuity at 0.
see thread What should be the correct range of acot function

BTW, acot(x) is not periodic. (may be you meant cot(x) ?)