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        <e type="operand">y</e>
        <e type="operand">2</e>
        <e type="operator" args="2">^</e>
        <e type="operator" args="2">+</e>
        <e type="bracket">(</e>
        <e type="operator" args="1">-</e>
        <e type="function" preserve="true" args="1">sqrt</e>
        <e type="operator" args="2">/</e>
        <e type="function" preserve="true" args="1">atan</e>
        <e type="operand">9</e>
        <e type="operand">x</e>
        <e type="operand">2</e>
        <e type="operator" args="2">^</e>
        <e type="operator" args="2">-</e>
        <e type="bracket">(</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="2">+</e>
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  </region>
  <region id="24" left="18" top="1260" width="642" height="104" color="#000000" bgColor="#ffe1e1" fontSize="10">
    <math>
      <description active="true" position="Top" lang="eng">
        <p>Setup wrt the double integral ... that's what Maple replies </p>
      </description>
      <input>
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        <e type="operand">y</e>
        <e type="operand">z</e>
        <e type="function" args="3">f</e>
        <e type="operand">z</e>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">z</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">z</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="function" preserve="true" args="4">int</e>
        <e type="operand">y</e>
        <e type="operand">x</e>
        <e type="function" args="1">y</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operand">x</e>
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        <e type="operand">1</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="function" preserve="true" args="4">int</e>
        <e type="operand">x</e>
        <e type="function" args="2">int</e>
        <e type="function" preserve="true" args="1">maple</e>
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      <result action="symbolic">
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        <e type="operand">9</e>
        <e type="operand">x</e>
        <e type="operand">2</e>
        <e type="operator" args="2">^</e>
        <e type="operator" args="2">-</e>
        <e type="operand">1</e>
        <e type="operand">2</e>
        <e type="operand">9</e>
        <e type="operand">x</e>
        <e type="operand">2</e>
        <e type="operator" args="2">^</e>
        <e type="operator" args="2">-</e>
        <e type="function" args="1">..</e>
        <e type="operand">2</e>
        <e type="operator" args="2">/</e>
        <e type="operator" args="2">^</e>
        <e type="operator" args="2">/</e>
        <e type="operator" args="1">-</e>
        <e type="operator" args="2">=</e>
        <e type="operand">x</e>
        <e type="function" args="3">int</e>
        <e type="function" args="1">int</e>
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    </math>
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  <region id="25" left="18" top="1395" width="428" height="88" color="#000000" bgColor="#ffe1e1" fontSize="10">
    <math>
      <input>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="operand">z</e>
        <e type="function" args="3">f</e>
        <e type="operand">y</e>
        <e type="operand">x</e>
        <e type="function" args="1">y</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operand">x</e>
        <e type="function" args="1">y</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="function" preserve="true" args="4">int</e>
        <e type="operand">x</e>
        <e type="function" args="2">int</e>
        <e type="function" preserve="true" args="1">maple</e>
      </input>
      <result action="symbolic">
        <e type="operand">x</e>
        <e type="operand">9</e>
        <e type="operand">x</e>
        <e type="operand">2</e>
        <e type="operator" args="2">^</e>
        <e type="operator" args="2">-</e>
        <e type="function" preserve="true" args="1">sqrt</e>
        <e type="operator" args="2">*</e>
        <e type="operand">9</e>
        <e type="operand">x</e>
        <e type="operand">3</e>
        <e type="operator" args="2">/</e>
        <e type="function" preserve="true" args="1">asin</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="2">+</e>
      </result>
    </math>
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    <plot type="2d" render="lines" scale_x="0.328273829878256" scale_y="2.00769288533717" scale_z="2.00769288533717" rotate_x="0" rotate_y="0" rotate_z="0" transpose_x="3" transpose_y="-1" transpose_z="0">
      <input>
        <e type="operand">x</e>
        <e type="operand">9</e>
        <e type="operand">x</e>
        <e type="operand">2</e>
        <e type="operator" args="2">^</e>
        <e type="operator" args="2">-</e>
        <e type="function" preserve="true" args="1">sqrt</e>
        <e type="operator" args="2">*</e>
        <e type="operand">9</e>
        <e type="operand">x</e>
        <e type="operand">3</e>
        <e type="operator" args="2">/</e>
        <e type="function" preserve="true" args="1">asin</e>
        <e type="operator" args="2">*</e>
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    <math decimalPlaces="6">
      <description active="true" position="Right" lang="eng">
        <p>sanity checked [100]</p>
      </description>
      <input>
        <e type="operand">x</e>
        <e type="operand">9</e>
        <e type="operand">x</e>
        <e type="operand">2</e>
        <e type="operator" args="2">^</e>
        <e type="operator" args="2">-</e>
        <e type="function" preserve="true" args="1">sqrt</e>
        <e type="operator" args="2">*</e>
        <e type="operand">9</e>
        <e type="operand">x</e>
        <e type="operand">3</e>
        <e type="operator" args="2">/</e>
        <e type="function" preserve="true" args="1">asin</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="2">+</e>
        <e type="operand">x</e>
        <e type="operand">0</e>
        <e type="operand">x2</e>
        <e type="function" preserve="true" args="4">int</e>
      </input>
      <result action="numeric">
        <e type="operand">24.411494</e>
      </result>
    </math>
  </region>
  <region id="28" left="18" top="1674" width="43" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">R</e>
        <e type="operand">1</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="29" left="18" top="1710" width="211" height="37" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="operand">R</e>
        <e type="function" args="3">g</e>
        <e type="operand">R</e>
        <e type="operand">2</e>
        <e type="operator" args="2">^</e>
        <e type="operand">x</e>
        <e type="operand">2</e>
        <e type="operator" args="2">^</e>
        <e type="operand">y</e>
        <e type="operand">2</e>
        <e type="operator" args="2">^</e>
        <e type="operator" args="2">+</e>
        <e type="bracket">(</e>
        <e type="operator" args="2">-</e>
        <e type="function" preserve="true" args="1">sqrt</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="30" left="279" top="1710" width="146" height="36" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">x</e>
        <e type="operand">R</e>
        <e type="function" args="2">f</e>
        <e type="operand">R</e>
        <e type="operand">2</e>
        <e type="operator" args="2">^</e>
        <e type="operand">x</e>
        <e type="operand">2</e>
        <e type="operator" args="2">^</e>
        <e type="operator" args="2">-</e>
        <e type="function" preserve="true" args="1">sqrt</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="31" left="18" top="1773" width="454" height="72" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <description active="true" position="Right" lang="eng">
        <p>Volume of sphereDoes not evaluate </p>
      </description>
      <input>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="operand">z</e>
        <e type="function" args="3">f</e>
        <e type="operand">z</e>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="operand">R</e>
        <e type="function" args="3">g</e>
        <e type="operator" args="1">-</e>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="operand">R</e>
        <e type="function" args="3">g</e>
        <e type="function" preserve="true" args="4">int</e>
        <e type="operand">y</e>
        <e type="operand">x</e>
        <e type="operand">R</e>
        <e type="function" args="2">f</e>
        <e type="operator" args="1">-</e>
        <e type="operand">x</e>
        <e type="operand">R</e>
        <e type="function" args="2">f</e>
        <e type="function" preserve="true" args="4">int</e>
        <e type="operand">x</e>
        <e type="operand">R</e>
        <e type="operator" args="1">-</e>
        <e type="operand">R</e>
        <e type="function" preserve="true" args="4">int</e>
        <e type="function" preserve="true" args="1">maple</e>
        <e type="operand">4</e>
        <e type="operand">3</e>
        <e type="operator" args="2">/</e>
        <e type="operand">π</e>
        <e type="operator" args="2">*</e>
        <e type="operand">R3</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="2">≡</e>
      </input>
    </math>
  </region>
</regions>