<?xml version='1.0'?>
<!DOCTYPE html PUBLIC '-//W3C//DTD XHTML 1.1 plus MathML 2.0//EN'
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  [<!ENTITY mathml 'http://www.w3.org/1998/Math/MathML'>]>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head><title>floating_point_eg3</title>
<!-- MathML created with MathCast Equation Editor version 0.89 -->
</head>
<body>
<math xmlns="http://www.w3.org/1998/Math/MathML" display="block">
  <mrow>
    <mfenced>
      <mrow>
        <mn>3</mn>
      </mrow>
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    <mspace width="1em"/>
    <mspace width="1em"/>
    <mfrac>
      <mi>d</mi>
      <mrow>
        <mi>d</mi>
        <mi>x</mi>
      </mrow>
    </mfrac>
    <mi>sin</mi>
    <mi>x</mi>
    <msub>
      <mo>|</mo>
      <mrow>
        <mi>x</mi>
        <mo>=</mo>
        <mfrac>
          <mi>&#x03C0;</mi>
          <mn>3</mn>
        </mfrac>
      </mrow>
    </msub>
    <mo>=</mo>
    <mi>cos</mi>
    <mfrac>
      <mi>&#x03C0;</mi>
      <mn>3</mn>
    </mfrac>
    <mo>=</mo>
    <mfrac>
      <mn>1</mn>
      <mn>2</mn>
    </mfrac>
  </mrow>
</math>
</body>
</html>
