2 cota
Input |
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2 cot(a) |
Alternate form assuming a is real |
-(2 sin(2 a))/(cos(2 a) – 1) |
Roots |
a = 1/2 (2 pi n + pi), n element Z |
Series expansion at a=0 |
2/a – (2 a)/3 – (2 a^3)/45 – (4 a^5)/945 + O(a^6) (Laurent series) |
Derivative |
d/da(2 cot(a)) = -2 csc^2(a) |
Indefinite integral |
integral 2 cot(a) da = 2 log(sin(a)) + constant |