 \ 

[images/example1.png] Screenshot

---
<?xml version="1.0"?>
<!DOCTYPE math PUBLIC "-//W3C//DTD MathML 2.0//EN" "http://www.w3.org/TR/MathML2/dtd/mathml2.dtd">
<math mode="display">
  <mrow>
    <munderover>
      <mo>&#x222B;</mo>
      <mn>1</mn>
      <mi>x</mi>
    </munderover>
    <mfrac>
      <mi>dt</mi>
      <mi>t</mi>
    </mfrac>
  </mrow>
</math>
---
