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 KASH3 Reference Manual
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Function

Argtanh ( elt-rng^ser x ) -> elt-rng^ser

Description

Return y such that tanh(y) = x.

Examples

x_lsr:=LaurentSeriesRing(C); x_l :=Element(x_lsr,[0,1,2]); Argtanh(x_l);
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