Apache Commons Math 3.6.1 · org.apache.commons.math3.analysis.DifferentiableMultivariateFunction

Method Summary

Modifier and Type	Method and Description
public MultivariateVectorFunction	Returns: the gradient function gradient() Returns the gradient function.
public MultivariateFunction	Returns: the partial derivative function with respect to k^th point coordinate partialDerivative(int index of the coordinate with respect to which the partial derivative is computed k) Returns the partial derivative of the function with respect to a point coordinate.

Inherited from org.apache.commons.math3.analysis.MultivariateFunction:: value

Method Detail

gradient back to summary

gradient	back to summary
public MultivariateVectorFunction gradient() 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:MultivariateVectorFunction the gradient function

public MultivariateVectorFunction gradient()

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:MultivariateVectorFunction: the gradient function

partialDerivative back to summary

partialDerivative	back to summary
public MultivariateFunction partialDerivative(int k) 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:int index of the coordinate with respect to which the partial derivative is computed Returns:MultivariateFunction the partial derivative function with respect to k^th point coordinate

public MultivariateFunction partialDerivative(int k)

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:int: index of the coordinate with respect to which the partial derivative is computed

Returns:MultivariateFunction

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

public Interface DifferentiableMultivariateFunction

Method Summary

Method Detail