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FilledSmallSquareArcSech[z] gives the inverse hyperbolic secant of the complex number z.

FilledSmallSquare Mathematical function (see Section A.3.10).

FilledSmallSquareArcSech[z] has branch cut discontinuities in the complex z plane running from to 0 and +1 to .

FilledSmallSquare See The Mathematica Book: Section 3.2.6.

Further Examples