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Commons Math example source code file (DifferentiableMultivariateRealFunction.java)

This example Commons Math source code file (DifferentiableMultivariateRealFunction.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Commons Math tags/keywords

differentiablemultivariaterealfunction, differentiablemultivariaterealfunction, multivariaterealfunction, multivariaterealfunction, multivariatevectorialfunction, multivariatevectorialfunction

The Commons Math DifferentiableMultivariateRealFunction.java source code

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.commons.math.analysis;

/**
 * Extension of {@link MultivariateRealFunction} representing a differentiable
 * multivariate real function.
 * @version $Revision: 811685 $ $Date: 2009-09-05 13:36:48 -0400 (Sat, 05 Sep 2009) $
 * @since 2.0
 */
public interface DifferentiableMultivariateRealFunction extends MultivariateRealFunction {

    /**
     * Returns the partial derivative of the function with respect to a point coordinate.
     * <p>
     * The partial derivative is defined with respect to point coordinate
     * x<sub>k. If the partial derivatives with respect to all coordinates are
     * needed, it may be more efficient to use the {@link #gradient()} method which will
     * compute them all at once.
     * </p>
     * @param k index of the coordinate with respect to which the partial
     * derivative is computed
     * @return the partial derivative function with respect to k<sup>th point coordinate
     */
    MultivariateRealFunction partialDerivative(int k);

    /**
     * Returns the gradient function.
     * <p>If only one partial derivative with respect to a specific coordinate is
     * needed, it may be more efficient to use the {@link #partialDerivative(int)} method
     * which will compute only the specified component.</p>
     * @return the gradient function
     */
    MultivariateVectorialFunction gradient();

}

Other Commons Math examples (source code examples)

Here is a short list of links related to this Commons Math DifferentiableMultivariateRealFunction.java source code file:

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