public interface DifferentiableMultivariateRealFunction extends MultivariateRealFunction
MultivariateRealFunction
representing a differentiable
multivariate real function.Modifier and Type | Method and Description |
---|---|
MultivariateVectorialFunction |
gradient()
Returns the gradient function.
|
MultivariateRealFunction |
partialDerivative(int k)
Returns the partial derivative of the function with respect to a point coordinate.
|
value
MultivariateRealFunction partialDerivative(int k)
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.
k
- index of the coordinate with respect to which the partial
derivative is computedMultivariateVectorialFunction gradient()
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.
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