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## Usage To attach a superscript to an expression, use the `PhpOffice\Math\Element\Superscript` class. ### Methods #### getBase The method has no parameter. #### getSuperscript The method has no parameter. #### setBase The method has one parameter : * `PhpOffice\Math\Element\AbstractElement` **$element** #### setSuperscript The method has one parameter : * `PhpOffice\Math\Element\AbstractElement` **$element** ## Example ### Math <math display="block"> <msup> <mi>X</mi> <mn>2</mn> </msup> </math> ### XML ``` xml <math display="block"> <msup> <mi>X</mi> <mn>2</mn> </msup> </math> ``` ### PHP ``` php <?php use PhpOffice\Math\Element; use PhpOffice\Math\Math; $math = new Math(); $superscript = new Element\Superscript(); $superscript->setBase(new Element\Identifier('X')); $superscript->setSuperscript(new Element\Numeric(2)); $math->add($superscript); ```
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