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 1415149 2012-11-29 13:12:55Z erans $

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 xk. 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 kth 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


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