Returns the hyperbolic cosine of x. - Java java.lang

Java examples for java.lang:Math Trigonometric Function

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Description

Returns the hyperbolic cosine of x.

Demo Code

/*/* w  ww  .  jav a 2  s .co  m*/
 * 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
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 */
//package com.java2s;

public class Main {
    /**
     * Returns the <a href="http://mathworld.wolfram.com/HyperbolicCosine.html">
     * hyperbolic cosine</a> of x.
     * 
     * @param x double value for which to find the hyperbolic cosine
     * @return hyperbolic cosine of x
     */
    public static double cosh(double x) {
        return (Math.exp(x) + Math.exp(-x)) / 2.0;
    }
}

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