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

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2007-05-02