<page xmlns="http://projectmallard.org/1.0/"
      xmlns:its="http://www.w3.org/2005/11/its"
      type="guide"
      id="power">

  <info>
    <link type="guide" xref="index#equation"/>
    <revision pkgversion="3.16" date="2015-02-21" status="candidate"/>

    <credit type="editor">
      <name>Ekaterina Gerasimova</name>
      <email its:translate="no">kittykat3756@gmail.com</email>
      <years>2015</years>
    </credit>
    <credit type="editor">
      <name>Sebastian Rasmussen</name>
      <email its:translate="no">sebras@gmail.com</email>
      <years>2015</years>
    </credit>
  </info>

  <title>Powers and Roots</title>
    
  <p>Powers are entered by putting a <link xref="superscript">superscript
  number</link> after the value.</p>

  <example>
    <p>5²</p>
  </example>

  <p>The inverse of a number can be entered using the inverse symbol ⁻¹
  (<keyseq><key>Ctrl</key><key>I</key></keyseq>).</p>

  <example>
    <p>3⁻¹</p>
  </example>

  <p>Powers can also be calculated using the ^ symbol. This allows the power to
  be an equation.</p>

  <example>
    <p>5^(6−2)</p>
  </example>

  <p>If your keyboard does not have a <key>^</key> key you can use <key>*</key>
  twice.</p>

  <p>Square roots can be calculated using the √ symbol
  (<keyseq><key>Ctrl</key><key>R</key></keyseq>) or sqrt <link xref="function">function</link>.</p>

  <example>
    <p>√2</p>
    <p>sqrt (2)</p>
  </example>

  <p>n-th roots can be calculated by putting a <link xref="superscript">subscript number</link> or
  <link xref="superscript">superscript number</link> before the root sign.</p>

  <example>
    <p>₃√2</p>
    <p>³√2</p>
  </example>

</page>
