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gltut / Documents / Positioning / PerspectiveFunc.mathml

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<?xml version="1.0" encoding="utf-8"?>
<math display="block" xmlns="http://www.w3.org/1998/Math/MathML">
<mrow>
  <mover accent="true">
          <mi>R</mi>
      <mo>&#x21C0;</mo>
  </mover>
  <mo>=</mo>
  <mover accent="true">
          <mi>P</mi>
        <mo>&#x21C0;</mo>
  </mover>
  <mfenced open="(" close=")" separators=",">
    <mrow>
      <mfrac>
        <mrow>
          <msub>
                  <mi>E</mi>
                <mi>z</mi>
          </msub>
        </mrow>
        <mrow>
          <msub>
                  <mi>P</mi>
                <mi>z</mi>
          </msub>
        </mrow>
      </mfrac>
    </mrow>
  </mfenced>
</mrow>
</math>