a ArcCosh[x] + b ArcSec[y] == (Pi b)/2 - 2 I Pi (Floor[(-Arg[(x + Sqrt[x - 1] Sqrt[x + 1])^a] - Arg[(Sqrt[1 - 1/y^2] + I/y)^(I b)] + Pi)/(2 Pi)] + Floor[(Pi - Im[a Log[x + Sqrt[x - 1] Sqrt[x + 1]]])/(2 Pi)] + Floor[(Pi - Re[b Log[Sqrt[1 - 1/y^2] + I/y]])/(2 Pi)]) + Log[(x + Sqrt[x - 1] Sqrt[x + 1])^a (Sqrt[1 - 1/y^2] + I/y)^(I b)]

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2007-05-02