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ExactHarmonicNumber​(System.​Int32,​PeterO.​Numbers.​ERational)

 Method (no overloads)

Summary

The harmonic number H_n^(m) = (-1)^m/(m - 1)! (psi^(m - 1)(1) - psi^(m - 1)(n + 1)) exactly, where
ExactPolygamma(PeterO.Numbers.EInteger,PeterO.Numbers.ERational) has both values: m = 1 or an even m, at a half-whole n.
Euler's constant, which both carry for m = 1, is left out rather than cancelled.

























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