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Integrate[Coth[x]^n, x] ==
(Coth[x]^(1 + n)*Hypergeometric2F1[1, (1 + n)/2,
1 + (1 + n)/2, Coth[x]^2])/(1 + n)
n Integrate[Coth[x] , x] ==
1 + n 1 + n 1 + n
(Coth[x] Hypergeometric2F1[1, -----, 1 + -----,
2 2
2
Coth[x] ]) / (1 + n)
Time to compute: 0.07 second
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