org.apache.commons.math3.analysis
Interface DifferentiableMultivariateFunction

All Superinterfaces:

MultivariateFunction

Deprecated. as of 3.1 replaced by MultivariateDifferentiableFunction

@Deprecated
public interface DifferentiableMultivariateFunction
extends MultivariateFunction

Extension of MultivariateFunction representing a differentiable multivariate real function.

Since:

2.0

Version:

$Id: DifferentiableMultivariateFunction.java 7721 2013-02-14 14:07:13Z CardosoP $

Method Summary

MultivariateVectorFunction	gradient() Deprecated. Returns the gradient function.
MultivariateFunction	partialDerivative(int k) Deprecated. Returns the partial derivative of the function with respect to a point coordinate.

Methods inherited from interface org.apache.commons.math3.analysis.MultivariateFunction

value

Method Detail

partialDerivative

MultivariateFunction partialDerivative(int k)

Deprecated.

Returns the partial derivative of the function with respect to a point coordinate.

The partial derivative is defined with respect to point coordinate x_k. If the partial derivatives with respect to all coordinates are needed, it may be more efficient to use the gradient() method which will compute them all at once.

Parameters:

k - index of the coordinate with respect to which the partial derivative is computed

Returns:

the partial derivative function with respect to k^th point coordinate

gradient

MultivariateVectorFunction gradient()

Deprecated.

Returns the gradient function.

If only one partial derivative with respect to a specific coordinate is needed, it may be more efficient to use the partialDerivative(int) method which will compute only the specified component.

Returns:

the gradient function