datatable.math.arcosh()

datatable.math.

arcosh

(

x

)

source

The inverse hyperbolic cosine of x.

This function satisfies the property that cosh(arccosh(x)) == x. Alternatively, this function can also be computed as \(\cosh^{-1}(x) = \ln(x + \sqrt{x^2 - 1})\).

See also

• cosh() – hyperbolic cosine;

• arsinh() – inverse hyperbolic sine.