org.apache.commons.math3.analysis.function

## Class Acosh

- java.lang.Object
- - org.apache.commons.math3.analysis.function.Acosh

All Implemented Interfaces:
  DifferentiableUnivariateFunction, UnivariateDifferentiableFunction, UnivariateFunction

    public class Acosh
    extends Object
    implements UnivariateDifferentiableFunction, DifferentiableUnivariateFunction

Hyperbolic arc-cosine function.

Since:
  3.0
Version:
  $Id: Acosh.java 1383441 2012-09-11 14:56:39Z luc $

### Constructor Summary

Constructors
Constructor and Description
`Acosh()`

### Method Summary

Methods
`UnivariateFunction` `derivative()` Deprecated. as of 3.1, replaced by `value(DerivativeStructure)`
`DerivativeStructure` `value(DerivativeStructure t)` Simple mathematical function.
`double` `value(double x)` Compute the value of the function.

### Methods inherited from class java.lang.Object

`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

### Constructor Detail

#### Acosh

    public Acosh()

### Method Detail

#### value

    public double value(double x)

Compute the value of the function.

Specified by:
  `value` in interface `UnivariateFunction`
Parameters:
  `x` - Point at which the function value should be computed.
Returns:
  the value of the function.

#### derivative

    @Deprecated
    public UnivariateFunction derivative()

Deprecated. as of 3.1, replaced by `value(DerivativeStructure)`
Returns the derivative of the function

Specified by:
  `derivative` in interface `DifferentiableUnivariateFunction`
Returns:
  the derivative function

#### value

    public DerivativeStructure value(DerivativeStructure t)

Simple mathematical function.

`UnivariateDifferentiableFunction` classes compute both the value and the first derivative of the function.

Specified by:
  `value` in interface `UnivariateDifferentiableFunction`
Parameters:
  `t` - function input value
Returns:
  function result
Since:
  3.1