/ Ruby
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method

acosh

ruby latest stable - Class: Math

Method deprecated or moved

This method is deprecated or moved on the latest stable version. The last existing version (v1_8_7_330) is shown here.

acosh(z)
public

No documentation available.

# File lib/complex.rb, line 594
  def acosh(z)
    if Complex.generic?(z) and z >= 1
      acosh!(z)
    else
      log( z + sqrt(z*z-1.0) )
    end
  end