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+---
+title: Math.SQRT2
+slug: Web/JavaScript/Referencia/Objectes_globals/Math/SQRT2
+translation_of: Web/JavaScript/Reference/Global_Objects/Math/SQRT2
+---
+<div>{{JSRef("Global_Objects", "Math")}}</div>
+
+<h2 id="Summary" name="Summary">Resum</h2>
+
+<p>La propietat <strong><code>Math.SQRT2</code></strong> representa la rel quadrada de 2, que és aproximadament 1.414:</p>
+
+<p><math display="block"><semantics><mrow><mstyle mathvariant="monospace"><mi>Math.SQRT2</mi></mstyle><mo>=</mo><msqrt><mn>2</mn></msqrt><mo>≈</mo><mn>1.414</mn></mrow><annotation encoding="TeX">\mathtt{\mi{Math.SQRT2}} = \sqrt{2} \approx 1.414</annotation></semantics></math></p>
+
+<div>{{js_property_attributes(0, 0, 0)}}</div>
+
+<h2 id="Description" name="Description">Descripció</h2>
+
+<p>Degut a que <code>SQRT2</code> és una propietat estàtica de <code>Math</code>, sempre s'utilitza com a <code>Math.SQRT2</code>, en comptes de com la propietat d'una instància de <code>Math</code> (<code>Math</code> no és un constructor).</p>
+
+<h2 id="Examples" name="Examples">Exemples</h2>
+
+<h3 id="Example:_Using_Math.SQRT2" name="Example:_Using_Math.SQRT2">Exemple: Utilitzar <code>Math.SQRT2</code></h3>
+
+<p>La funció següent retorna la rel quadrada de 2:</p>
+
+<pre class="brush: js">function getRoot2() {
+  return Math.SQRT2;
+}
+
+getRoot2(); // 1.4142135623730951
+</pre>
+
+<h2 id="Specifications" name="Specifications">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>ECMAScript 1a Edició.</td>
+   <td>Standard</td>
+   <td>Definició inicial. Implementat a JavaScript 1.0.</td>
+  </tr>
+  <tr>
+   <td>{{SpecName('ES5.1', '#sec-15.8.1.8', 'Math.SQRT2')}}</td>
+   <td>{{Spec2('ES5.1')}}</td>
+   <td> </td>
+  </tr>
+  <tr>
+   <td>{{SpecName('ES6', '#sec-math.sqrt2', 'Math.SQRT2')}}</td>
+   <td>{{Spec2('ES6')}}</td>
+   <td> </td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="Browser_compatibility" name="Browser_compatibility">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>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</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>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<h2 id="See_also" name="See_also">Vegeu també</h2>
+
+<ul>
+ <li>{{jsxref("Math.pow()")}}</li>
+ <li>{{jsxref("Math.sqrt()")}}</li>
+</ul>