MathLib.arcosh()

MathLib.arcosh() calculates the inverse hyperbolic cosine of a number. \[ \text{MathLib.arcosh}(x) = \operatorname{arcosh}(x) \]

Specification

MathLib.arcosh accepts one argument. Any additional arguments will be ignored. The type of the argument should be number. For other argument types see the unary function specification.
  1. MathLib.arcosh(NaN) = NaN
  2. MathLib.arcosh(+∞) = +∞
  3. MathLib.arcosh(-∞) = NaN
  4. MathLib.arcosh(x) = NaN if x < 1
  5. MathLib.arcosh(1) = +0
  6. otherwise MathLib.arcosh(x) = inverse hyperbolic cosine of x

Tests

Categories: unary Function