Topic: ACOT function is not calculated correctly

ACOT function in not calculated according to current Mathematic standards.
In fact, when x is less thax zero, ACOT function should be greater than TT/2
(TT = 3,14....)
On the contrary you return values less than zero! and this does not comply Mathematical rules for that function which must be continuous all over Real axis

Re: ACOT function is not calculated correctly

Please see http://mathworld.wolfram.com/InverseCotangent.html