<?xml version='1.0'?>
<!DOCTYPE html PUBLIC '-//W3C//DTD XHTML 1.1 plus MathML 2.0//EN'
  'http://www.w3.org/TR/MathML2/dtd/xhtml-math11-f.dtd'
  [<!ENTITY mathml 'http://www.w3.org/1998/Math/MathML'>]>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head><title>normal_cdf</title>
<!-- MathML created with MathCast Equation Editor version 0.9 -->
</head>
<body>
<math xmlns="http://www.w3.org/1998/Math/MathML" display="block">
  <mrow>
    <mfrac>
      <mn>1</mn>
      <mn>2</mn>
    </mfrac>
    <mo>{</mo>
    <mn>1</mn>
    <mo>+</mo>
    <mi>e</mi>
    <mi>r</mi>
    <mi>f</mi>
    <mfenced>
      <mrow>
        <mfrac>
          <mfenced>
            <mrow>
              <mi>x</mi>
              <mo>&#x2212;</mo>
              <mi>&#x3BC;</mi>
            </mrow>
          </mfenced>
          <msqrt>
            <mfenced>
              <mrow>
                <mn>2</mn>
                <msup>
                  <mi>&#x3C3;</mi>
                  <mn>2</mn>
                </msup>
              </mrow>
            </mfenced>
          </msqrt>
        </mfrac>
      </mrow>
    </mfenced>
    <mo>]</mo>
  </mrow>
</math>
</body>
</html>
