1 /* 2 * Copyright 2004 The Apache Software Foundation. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package org.apache.commons.math.analysis; 17 18 /** 19 * Extension of {@link UnivariateRealFunction} representing a differentiable univariate real function. 20 * 21 * @version $Revision: 155427 $ $Date: 2005-02-26 06:11:52 -0700 (Sat, 26 Feb 2005) $ 22 */ 23 public interface DifferentiableUnivariateRealFunction 24 extends UnivariateRealFunction { 25 26 /** 27 * Returns the derivative of the function 28 * 29 * @return the derivative function 30 */ 31 public UnivariateRealFunction derivative(); 32 33 }