Integrate[1/(a + b Coth[c z]^2)^2, z] == ((-a + b + (a + b) Cosh[2 c z]) Csch[c z]^4 (2 z (-a + b + (a + b) Cosh[2 c z]) - (1/(a^(3/2) c)) (Sqrt[b] (3 a + b) ArcTan[(Sqrt[a] Tanh[c z])/Sqrt[b]] (-a + b + (a + b) Cosh[2 c z])) + (b (a + b) Sinh[2 c z])/(a c)))/ (8 (a + b)^2 (a + b Coth[c z]^2)^2)

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2002-12-18