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author | Florian Merz <me@fiji-flo.de> | 2021-02-11 14:45:12 +0100 |
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committer | Florian Merz <me@fiji-flo.de> | 2021-02-11 14:45:12 +0100 |
commit | cb9e359a51c3249d8f5157db69d43fd413ddeda6 (patch) | |
tree | ae3040d626c3b5717da5bda2af9f0a9ff9bd389f /files/ca/web/javascript/referencia/objectes_globals/math/tanh/index.html | |
parent | 8260a606c143e6b55a467edf017a56bdcd6cba7e (diff) | |
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diff --git a/files/ca/web/javascript/referencia/objectes_globals/math/tanh/index.html b/files/ca/web/javascript/referencia/objectes_globals/math/tanh/index.html deleted file mode 100644 index ada19d17e0..0000000000 --- a/files/ca/web/javascript/referencia/objectes_globals/math/tanh/index.html +++ /dev/null @@ -1,142 +0,0 @@ ---- -title: Math.tanh() -slug: Web/JavaScript/Referencia/Objectes_globals/Math/tanh -translation_of: Web/JavaScript/Reference/Global_Objects/Math/tanh ---- -<div>{{JSRef}}</div> - -<p>La funció <strong><code>Math.tanh()</code></strong> retorna la tangent hiperbòlica d'un nombre, és a dir</p> - -<p><math display="block"><semantics><mrow><mo lspace="0em" rspace="0em">tanh</mo><mi>x</mi><mo>=</mo><mfrac><mrow><mo lspace="0em" rspace="0em">sinh</mo><mi>x</mi></mrow><mrow><mo lspace="0em" rspace="0em">cosh</mo><mi>x</mi></mrow></mfrac><mo>=</mo><mfrac><mrow><msup><mi>e</mi><mi>x</mi></msup><mo>-</mo><msup><mi>e</mi><mrow><mo>-</mo><mi>x</mi></mrow></msup></mrow><mrow><msup><mi>e</mi><mi>x</mi></msup><mo>+</mo><msup><mi>e</mi><mrow><mo>-</mo><mi>x</mi></mrow></msup></mrow></mfrac><mo>=</mo><mfrac><mrow><msup><mi>e</mi><mrow><mn>2</mn><mi>x</mi></mrow></msup><mo>-</mo><mn>1</mn></mrow><mrow><msup><mi>e</mi><mrow><mn>2</mn><mi>x</mi></mrow></msup><mo>+</mo><mn>1</mn></mrow></mfrac></mrow><annotation encoding="TeX">\tanh x = \frac{\sinh x}{\cosh x} = \frac {e^x - e^{-x}} {e^x + e^{-x}} = \frac{e^{2x} - 1}{e^{2x}+1}</annotation></semantics></math></p> - -<h2 id="Sintaxi">Sintaxi</h2> - -<pre class="syntaxbox"><code>Math.tanh(<var>x</var>)</code></pre> - -<h3 id="Paràmetres">Paràmetres</h3> - -<dl> - <dt><code>x</code></dt> - <dd>Un nombre.</dd> -</dl> - -<h2 id="Descripció">Descripció</h2> - -<p>Com que que <code>tanh()</code> és un mètode estàtic de <code>Math</code>, sempre s'utilitza com a <code>Math.tanh()</code>, en comptes de com a mètode d'una instància de <code>Math</code> (<code>Math</code> no és un constructor).</p> - -<h2 id="Exemples">Exemples</h2> - -<h3 id="Utilitzar_Math.tanh()">Utilitzar <code>Math.tanh()</code></h3> - -<pre class="brush: js">Math.tanh(0); // 0 -Math.tanh(Infinity); // 1 -Math.tanh(1); // 0.7615941559557649 -</pre> - -<h2 id="Polyfill">Polyfill</h2> - -<p>Aquest comportament pot emular-se amb l'ajuda de la funció {{jsxref("Math.exp()")}}:</p> - -<pre class="brush: js">Math.tanh = Math.tanh || function(x) { - if (x === Infinity) { - return 1; - } else if (x === -Infinity) { - return -1; - } else { - return (Math.exp(x) - Math.exp(-x)) / (Math.exp(x) + Math.exp(-x)); - } -} -</pre> - -<p>o bé utilitzant només una crida a {{jsxref("Math.exp()")}}:</p> - -<pre class="brush: js">Math.tanh = Math.tanh || function(x) { - if (x === Infinity) { - return 1; - } else if (x === -Infinity) { - return -1; - } else { - var y = Math.exp(2 * x); - return (y - 1) / (y + 1); - } -} -</pre> - -<h2 id="Especificacions">Especificacions</h2> - -<table class="standard-table"> - <tbody> - <tr> - <th scope="col">Especificació</th> - <th scope="col">Estat</th> - <th scope="col">Comentaris</th> - </tr> - <tr> - <td>{{SpecName('ES6', '#sec-math.tanh', 'Math.tanh')}}</td> - <td>{{Spec2('ES6')}}</td> - <td>Definició inicial.</td> - </tr> - </tbody> -</table> - -<h2 id="Compatibilitat_amb_navegadors">Compatibilitat amb navegadors</h2> - -<div>{{CompatibilityTable}}</div> - -<div id="compat-desktop"> -<table class="compat-table"> - <tbody> - <tr> - <th>Característica</th> - <th>Chrome</th> - <th>Firefox (Gecko)</th> - <th>Internet Explorer</th> - <th>Opera</th> - <th>Safari</th> - </tr> - <tr> - <td>Suport bàsic</td> - <td>{{CompatChrome("38")}}</td> - <td>{{CompatGeckoDesktop("25")}}</td> - <td>{{CompatNo}}</td> - <td>{{CompatOpera("25")}}</td> - <td>{{CompatSafari("7.1")}}</td> - </tr> - </tbody> -</table> -</div> - -<div id="compat-mobile"> -<table class="compat-table"> - <tbody> - <tr> - <th>Característica</th> - <th>Android</th> - <th>Chrome for Android</th> - <th>Firefox Mobile (Gecko)</th> - <th>IE Mobile</th> - <th>Opera Mobile</th> - <th>Safari Mobile</th> - </tr> - <tr> - <td>Suport bàsic</td> - <td>{{CompatNo}}</td> - <td>{{CompatNo}}</td> - <td>{{CompatGeckoMobile("25")}}</td> - <td>{{CompatNo}}</td> - <td>{{CompatNo}}</td> - <td>8</td> - </tr> - </tbody> -</table> -</div> - -<h2 id="Vegeu_també">Vegeu també</h2> - -<ul> - <li>{{jsxref("Math.acosh()")}} {{experimental_inline}}</li> - <li>{{jsxref("Math.asinh()")}} {{experimental_inline}}</li> - <li>{{jsxref("Math.atanh()")}} {{experimental_inline}}</li> - <li>{{jsxref("Math.cosh()")}} {{experimental_inline}}</li> - <li>{{jsxref("Math.sinh()")}} {{experimental_inline}}</li> -</ul> |