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A function that can be used in Formulas.
arcsinh (x)
x.
arcsinh (x) = ln (x + √(1+x2)) |
assert arcsinh (-1.0) < 0
assert arcsinh (0.0) = 0
assert arcsinh (1.0) > 0
assert arcsinh (undefined) = undefined
© Paul Boersma 2023