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          <p>Using ode solvers for double integration</p>
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          <p>where B is the box</p>
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          <p>default ode solvers</p>
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          <p style="font-weight: bold;">Two variables - Rectangle domain</p>
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          <p style="font-weight: bold;">Two variables - Double Interal type I</p>
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          <e type="operator" args="2">-</e>
          <e type="operator" args="2">:</e>
          <e type="operand">2</e>
          <e type="operand">1</e>
          <e type="function" args="4">line</e>
        </input>
      </math>
    </region>
    <region left="558" top="765" width="187" height="158" color="#000000" fontSize="8" showInputData="false">
      <plot type="2d" render="lines" scale_x="3.07597365202425" scale_y="3.41774850224917" scale_z="9.65372299555906" rotate_x="0" rotate_y="0" rotate_z="0" transpose_x="-17" transpose_y="0" transpose_z="0">
        <input>
          <e type="operand">c</e>
          <e type="operand">x</e>
          <e type="operand">a</e>
          <e type="operand">b</e>
          <e type="function" args="3">lele</e>
          <e type="operator" args="2">*</e>
          <e type="operand">d</e>
          <e type="operand">x</e>
          <e type="operand">a</e>
          <e type="operand">b</e>
          <e type="function" args="3">lele</e>
          <e type="operator" args="2">*</e>
          <e type="operand">2</e>
          <e type="operand">1</e>
          <e type="function" args="4">sys</e>
        </input>
      </plot>
    </region>
    <region left="63" top="828" width="194" height="47" color="#000000" fontSize="10">
      <math>
        <input>
          <e type="operand">z</e>
          <e type="operand">b</e>
          <e type="operand">d</e>
          <e type="operand">a</e>
          <e type="operand">c</e>
          <e type="operand">2</e>
          <e type="operand">2</e>
          <e type="function" args="6">mat</e>
          <e type="function" args="2">dint</e>
        </input>
        <result action="numeric">
          <e type="operand">13.1114</e>
        </result>
      </math>
    </region>
    <region left="297" top="828" width="225" height="71" color="#000000" fontSize="10">
      <math>
        <input>
          <e type="operand">z</e>
          <e type="operand">y</e>
          <e type="operand">c</e>
          <e type="operand">d</e>
          <e type="function" args="4">int</e>
          <e type="operand">x</e>
          <e type="operand">a</e>
          <e type="operand">b</e>
          <e type="function" args="4">int</e>
          <e type="function" args="1">maple</e>
        </input>
        <result action="numeric">
          <e type="operand">13.1114</e>
        </result>
      </math>
    </region>
    <region left="18" top="891" width="293" height="24" color="#000000" fontSize="10" isBreakable="false">
      <text lang="eng" fontFamily="Consolas" fontSize="10">
        <content>
          <p style="font-weight: bold;">Two variables - Double Interal type II</p>
        </content>
      </text>
    </region>
    <region left="54" top="927" width="108" height="33" color="#000000" fontSize="10">
      <math>
        <input>
          <e type="operand">z</e>
          <e type="operand">x</e>
          <e type="operand">y</e>
          <e type="operator" args="2">*</e>
          <e type="operand">e</e>
          <e type="operand">x</e>
          <e type="operator" args="1">-</e>
          <e type="operator" args="2">^</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region left="270" top="927" width="89" height="54" color="#000000" fontSize="10">
      <math>
        <input>
          <e type="operand">a</e>
          <e type="operand">3</e>
          <e type="operand">y</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="2">:</e>
          <e type="operand">b</e>
          <e type="operand">y</e>
          <e type="operand">2</e>
          <e type="operator" args="2">^</e>
          <e type="operand">2</e>
          <e type="operator" args="2">+</e>
          <e type="operator" args="2">:</e>
          <e type="operand">2</e>
          <e type="operand">1</e>
          <e type="function" args="4">line</e>
        </input>
      </math>
    </region>
    <region left="396" top="927" width="119" height="27" color="#000000" fontSize="10">
      <math>
        <input>
          <e type="operand">c</e>
          <e type="operand">d</e>
          <e type="operand">1</e>
          <e type="operand">2</e>
          <e type="function" args="4">mat</e>
          <e type="operand">1</e>
          <e type="operator" args="1">-</e>
          <e type="operand">1</e>
          <e type="operand">1</e>
          <e type="operand">2</e>
          <e type="function" args="4">mat</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region left="549" top="927" width="197" height="158" color="#000000" bgColor="#ffffff" fontSize="8" showInputData="false">
      <xyplot width="187" height="150" points="100" name="XYPlot">
        <chartstyle backcolor="White" bordercolor="Black" />
        <propertiessource index="1" sourcetype="PropertyGrid" />
        <grid gridcolor="LightGray" gridpattern="Dash" gridthickness="1" isxgrid="true" isygrid="true" isy2grid="false" />
        <xaxes xmin="-4.489237" xmax="4.333784" xtick="4" visible="True" decimalplaces="3" numberformat="General" />
        <yaxes ymin="-1.475002" ymax="1.516745" ytick="1" visible="True" decimalplaces="3" numberformat="General" />
        <y2axes isy2axis="false" y2min="-1" y2max="1" y2tick="0.5" visible="True" decimalplaces="3" numberformat="General" />
        <title2d title="" titlefont="Arial, 10pt" titlefontcolor="Black" />
        <xylabel labelfont="Arial, 10pt" labelfontcolor="Black" tickfont="Arial, 8pt" tickfontcolor="Black" xlabel="" ylabel="" y2label="y2" />
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        <traces>
          <trace seriesname="" isy2data="false" isvisible="true" plotmethod="Lines" lineantialias="true" linecolor="Blue" linethickness="1" linepattern="Solid" symbolantialias="true" symbolsize="8" symboltype="None" symbolborderthickness="1" symbolbordercolor="Black" symbolfillcolor="White" />
          <trace seriesname="" isy2data="false" isvisible="true" plotmethod="Lines" lineantialias="true" linecolor="Red" linethickness="1" linepattern="Solid" symbolantialias="true" symbolsize="8" symboltype="None" symbolborderthickness="1" symbolbordercolor="Black" symbolfillcolor="White" />
        </traces>
        <input>
          <e type="operand">x</e>
          <e type="operand">b</e>
          <e type="operator" args="2">-</e>
          <e type="operand">y</e>
          <e type="operand">c</e>
          <e type="operand">d</e>
          <e type="function" args="3">lele</e>
          <e type="operand" style="string"></e>
          <e type="function" args="3">cases</e>
          <e type="operand">x</e>
          <e type="operand">a</e>
          <e type="operator" args="2">-</e>
          <e type="operand">y</e>
          <e type="operand">c</e>
          <e type="operand">d</e>
          <e type="function" args="3">lele</e>
          <e type="operand" style="string"></e>
          <e type="function" args="3">cases</e>
          <e type="operand">2</e>
          <e type="operand">1</e>
          <e type="function" args="4">sys</e>
        </input>
      </xyplot>
    </region>
    <region left="54" top="981" width="186" height="47" color="#000000" fontSize="10">
      <math>
        <input>
          <e type="operand">z</e>
          <e type="operand">b</e>
          <e type="operand">d</e>
          <e type="operand">a</e>
          <e type="operand">c</e>
          <e type="operand">2</e>
          <e type="operand">2</e>
          <e type="function" args="6">mat</e>
          <e type="function" args="2">dint</e>
        </input>
        <result action="numeric">
          <e type="operand">6.5791</e>
        </result>
      </math>
    </region>
    <region left="279" top="981" width="209" height="71" color="#000000" fontSize="10">
      <math>
        <input>
          <e type="operand">z</e>
          <e type="operand">x</e>
          <e type="operand">a</e>
          <e type="operand">b</e>
          <e type="function" args="4">int</e>
          <e type="operand">y</e>
          <e type="operand">c</e>
          <e type="operand">d</e>
          <e type="function" args="4">int</e>
          <e type="function" args="1">maple</e>
        </input>
        <result action="numeric">
          <e type="operand">6.579</e>
        </result>
      </math>
    </region>
    <region left="18" top="1071" width="117" height="24" color="#000000" fontSize="10">
      <text lang="eng" fontFamily="Consolas" fontSize="10">
        <content>
          <p style="font-weight: bold;">General Domain</p>
        </content>
      </text>
    </region>
    <region left="792" top="1089" width="228" height="65" color="#000000" fontSize="10">
      <math>
        <input>
          <e type="operand">0</e>
          <e type="operand">0</e>
          <e type="operand">0</e>
          <e type="operand">1</e>
          <e type="operand">1</e>
          <e type="operand">0</e>
          <e type="operand">3</e>
          <e type="operand">2</e>
          <e type="function" args="8">mat</e>
          <e type="operand">x</e>
          <e type="operand">y</e>
          <e type="function" args="3">ImplicitPolygon</e>
        </input>
      </math>
    </region>
    <region left="18" top="1098" width="139" height="24" color="#000000" fontSize="10">
      <text lang="eng" fontFamily="Consolas" fontSize="10">
        <content>
          <p>Triangular domain</p>
        </content>
      </text>
    </region>
    <region left="54" top="1125" width="151" height="65" color="#000000" fontSize="10">
      <math>
        <input>
          <e type="operand">D</e>
          <e type="operand">x</e>
          <e type="operator" args="1">-</e>
          <e type="operand">x</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="operand">y</e>
          <e type="operator" args="2">+</e>
          <e type="operand">y</e>
          <e type="operator" args="1">-</e>
          <e type="operand">3</e>
          <e type="operand">1</e>
          <e type="function" args="5">mat</e>
          <e type="function" args="1">max</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region left="234" top="1125" width="66" height="24" color="#000000" fontSize="10">
      <math>
        <input>
          <e type="operand">z</e>
          <e type="operand">x</e>
          <e type="operand">y</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region left="540" top="1125" width="197" height="158" color="#000000" bgColor="#ffffff" fontSize="8" showInputData="false">
      <xyplot width="187" height="150" points="100" name="XYPlot">
        <chartstyle backcolor="White" bordercolor="Black" />
        <propertiessource index="1" sourcetype="PropertyGrid" />
        <grid gridcolor="LightGray" gridpattern="Dash" gridthickness="1" isxgrid="true" isygrid="true" isy2grid="false" />
        <xaxes xmin="-0.4645297" xmax="1.213192" xtick="0.5" visible="True" decimalplaces="3" numberformat="General" />
        <yaxes ymin="-0.6266668" ymax="1.373333" ytick="0.5" visible="True" decimalplaces="3" numberformat="General" />
        <y2axes isy2axis="false" y2min="-1" y2max="1" y2tick="0.5" visible="True" decimalplaces="3" numberformat="General" />
        <title2d title="" titlefont="Arial, 10pt" titlefontcolor="Black" />
        <xylabel labelfont="Arial, 10pt" labelfontcolor="Black" tickfont="Arial, 8pt" tickfontcolor="Black" xlabel="" ylabel="" y2label="y2" />
        <legend isbordervisible="true" islegendvisible="false" legendbackcolor="White" legendbordercolor="Black" legendfont="Arial, 8pt" legendposition="NorthEast" textcolor="Black" />
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          <trace seriesname="" isy2data="false" isvisible="true" plotmethod="Lines" lineantialias="true" linecolor="Blue" linethickness="1" linepattern="Solid" symbolantialias="true" symbolsize="8" symboltype="None" symbolborderthickness="1" symbolbordercolor="Black" symbolfillcolor="White" />
        </traces>
        <input>
          <e type="operand">D</e>
        </input>
      </xyplot>
    </region>
    <region left="54" top="1188" width="237" height="47" color="#000000" fontSize="10">
      <math>
        <input>
          <e type="operand">z</e>
          <e type="operand">D</e>
          <e type="operand">0</e>
          <e type="operator" args="2">&lt;</e>
          <e type="bracket">(</e>
          <e type="operator" args="2">*</e>
          <e type="operand">1</e>
          <e type="operand">1</e>
          <e type="operand">0</e>
          <e type="operand">0</e>
          <e type="operand">2</e>
          <e type="operand">2</e>
          <e type="function" args="6">mat</e>
          <e type="function" args="2">dint</e>
        </input>
        <result action="numeric">
          <e type="operand">0.0418</e>
        </result>
      </math>
    </region>
    <region left="423" top="1188" width="94" height="41" color="#000000" fontSize="10">
      <math>
        <input>
          <e type="operand">1</e>
          <e type="operand">24</e>
          <e type="operator" args="2">/</e>
        </input>
        <result action="numeric">
          <e type="operand">0.0417</e>
        </result>
      </math>
    </region>
    <region left="18" top="1242" width="124" height="24" color="#000000" fontSize="10" isBreakable="false">
      <text lang="eng" fontFamily="Consolas" fontSize="10">
        <content>
          <p>Circular domain</p>
        </content>
      </text>
    </region>
    <region left="54" top="1269" width="46" height="24" color="#000000" fontSize="10">
      <math>
        <input>
          <e type="operand">R</e>
          <e type="operand">2</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region left="126" top="1269" width="129" height="33" color="#000000" fontSize="10">
      <math>
        <input>
          <e type="operand">D</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="operand">R</e>
          <e type="operand">2</e>
          <e type="operator" args="2">^</e>
          <e type="operator" args="2">-</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region left="306" top="1269" width="94" height="33" color="#000000" fontSize="10">
      <math>
        <input>
          <e type="operand">z</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="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region left="540" top="1269" width="197" height="158" color="#000000" bgColor="#ffffff" fontSize="8" showInputData="false">
      <xyplot width="187" height="150" points="100" name="XYPlot">
        <chartstyle backcolor="White" bordercolor="Black" />
        <propertiessource index="1" sourcetype="PropertyGrid" />
        <grid gridcolor="LightGray" gridpattern="Dash" gridthickness="1" isxgrid="true" isygrid="true" isy2grid="false" />
        <xaxes xmin="-2.957527" xmax="3.054053" xtick="2" visible="True" decimalplaces="3" numberformat="General" />
        <yaxes ymin="-2.353071" ymax="2.623569" ytick="2" visible="True" decimalplaces="3" numberformat="General" />
        <y2axes isy2axis="false" y2min="-1" y2max="1" y2tick="0.5" visible="True" decimalplaces="3" numberformat="General" />
        <title2d title="" titlefont="Arial, 10pt" titlefontcolor="Black" />
        <xylabel labelfont="Arial, 10pt" labelfontcolor="Black" tickfont="Arial, 8pt" tickfontcolor="Black" xlabel="" ylabel="" y2label="y2" />
        <legend isbordervisible="true" islegendvisible="false" legendbackcolor="White" legendbordercolor="Black" legendfont="Arial, 8pt" legendposition="NorthEast" textcolor="Black" />
        <traces>
          <trace seriesname="" isy2data="false" isvisible="true" plotmethod="Lines" lineantialias="true" linecolor="Blue" linethickness="1" linepattern="Solid" symbolantialias="true" symbolsize="8" symboltype="None" symbolborderthickness="1" symbolbordercolor="Black" symbolfillcolor="White" />
        </traces>
        <input>
          <e type="operand">D</e>
        </input>
      </xyplot>
    </region>
    <region left="54" top="1314" width="274" height="47" color="#000000" fontSize="10">
      <math>
        <input>
          <e type="operand">z</e>
          <e type="operand">D</e>
          <e type="operand">0</e>
          <e type="operator" args="2">&lt;</e>
          <e type="bracket">(</e>
          <e type="operator" args="2">*</e>
          <e type="operand">R</e>
          <e type="operand">R</e>
          <e type="operand">R</e>
          <e type="operator" args="1">-</e>
          <e type="operand">R</e>
          <e type="operator" args="1">-</e>
          <e type="operand">2</e>
          <e type="operand">2</e>
          <e type="function" args="6">mat</e>
          <e type="function" args="2">dint</e>
        </input>
        <result action="numeric">
          <e type="operand">25.1774</e>
        </result>
      </math>
    </region>
    <region left="396" top="1314" width="123" height="50" color="#000000" fontSize="10">
      <math>
        <input>
          <e type="operand">π</e>
          <e type="operand">R</e>
          <e type="operand">4</e>
          <e type="operator" args="2">^</e>
          <e type="operator" args="2">*</e>
          <e type="operand">2</e>
          <e type="operator" args="2">/</e>
        </input>
        <result action="numeric">
          <e type="operand">25.1327</e>
        </result>
      </math>
    </region>
    <region left="18" top="1377" width="139" height="24" color="#000000" fontSize="10" isBreakable="false">
      <text lang="eng" fontFamily="Consolas" fontSize="10">
        <content>
          <p>Elliptical domain</p>
        </content>
      </text>
    </region>
    <region left="54" top="1422" width="106" height="27" color="#000000" fontSize="10">
      <math>
        <input>
          <e type="operand">α</e>
          <e type="operand">β</e>
          <e type="operand">1</e>
          <e type="operand">2</e>
          <e type="function" args="4">mat</e>
          <e type="operand">2</e>
          <e type="operand">3</e>
          <e type="operand">1</e>
          <e type="operand">2</e>
          <e type="function" args="4">mat</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region left="189" top="1422" width="149" height="52" color="#000000" fontSize="10">
      <math>
        <input>
          <e type="operand">D</e>
          <e type="operand">x</e>
          <e type="operand">α</e>
          <e type="operator" args="2">/</e>
          <e type="bracket">(</e>
          <e type="operand">2</e>
          <e type="operator" args="2">^</e>
          <e type="operand">y</e>
          <e type="operand">β</e>
          <e type="operator" args="2">/</e>
          <e type="bracket">(</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="operator" args="2">-</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region left="396" top="1422" width="120" height="50" color="#000000" fontSize="10">
      <math>
        <input>
          <e type="operand">z</e>
          <e type="operand">e</e>
          <e type="operand">3</e>
          <e type="operand">x</e>
          <e type="operator" args="2">*</e>
          <e type="operand">2</e>
          <e type="operand">y</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="2">-</e>
          <e type="operand">4</e>
          <e type="operator" args="2">/</e>
          <e type="operator" args="2">^</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region left="540" top="1422" width="197" height="158" color="#000000" bgColor="#ffffff" fontSize="8" showInputData="false">
      <xyplot width="187" height="150" points="100" name="XYPlot">
        <chartstyle backcolor="White" bordercolor="Black" />
        <propertiessource index="1" sourcetype="PropertyGrid" />
        <grid gridcolor="LightGray" gridpattern="Dash" gridthickness="1" isxgrid="true" isygrid="true" isy2grid="false" />
        <xaxes xmin="-5.145742" xmax="5.242268" xtick="4" visible="True" decimalplaces="3" numberformat="General" />
        <yaxes ymin="-4.164568" ymax="4.435066" ytick="4" visible="True" decimalplaces="3" numberformat="General" />
        <y2axes isy2axis="false" y2min="-1" y2max="1" y2tick="0.5" visible="True" decimalplaces="3" numberformat="General" />
        <title2d title="" titlefont="Arial, 10pt" titlefontcolor="Black" />
        <xylabel labelfont="Arial, 10pt" labelfontcolor="Black" tickfont="Arial, 8pt" tickfontcolor="Black" xlabel="" ylabel="" y2label="y2" />
        <legend isbordervisible="true" islegendvisible="false" legendbackcolor="White" legendbordercolor="Black" legendfont="Arial, 8pt" legendposition="NorthEast" textcolor="Black" />
        <traces>
          <trace seriesname="" isy2data="false" isvisible="true" plotmethod="Lines" lineantialias="true" linecolor="Blue" linethickness="1" linepattern="Solid" symbolantialias="true" symbolsize="8" symboltype="None" symbolborderthickness="1" symbolbordercolor="Black" symbolfillcolor="White" />
        </traces>
        <input>
          <e type="operand">D</e>
        </input>
      </xyplot>
    </region>
    <region left="54" top="1485" width="266" height="47" color="#000000" fontSize="10">
      <math>
        <input>
          <e type="operand">z</e>
          <e type="operand">D</e>
          <e type="operand">0</e>
          <e type="operator" args="2">&lt;</e>
          <e type="bracket">(</e>
          <e type="operator" args="2">*</e>
          <e type="operand">α</e>
          <e type="operand">β</e>
          <e type="operand">α</e>
          <e type="operator" args="1">-</e>
          <e type="operand">β</e>
          <e type="operator" args="1">-</e>
          <e type="operand">2</e>
          <e type="operand">2</e>
          <e type="function" args="6">mat</e>
          <e type="function" args="2">dint</e>
        </input>
        <result action="numeric">
          <e type="operand">31.561</e>
        </result>
      </math>
    </region>
    <region left="54" top="1539" width="87" height="24" color="#000000" fontSize="10" isBreakable="false">
      <text lang="eng" fontFamily="Consolas" fontSize="10">
        <content>
          <p>As type I:</p>
        </content>
      </text>
    </region>
    <region left="189" top="1539" width="186" height="45" color="#000000" fontSize="10">
      <math>
        <input>
          <e type="operand">yo</e>
          <e type="operand">α</e>
          <e type="operand">x</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
          <e type="operand">α</e>
          <e type="operand">x</e>
          <e type="operator" args="2">+</e>
          <e type="bracket">(</e>
          <e type="operator" args="2">*</e>
          <e type="function" args="1">sqrt</e>
          <e type="operand">β</e>
          <e type="operator" args="2">*</e>
          <e type="operand">α</e>
          <e type="operator" args="2">/</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region left="189" top="1584" width="227" height="47" color="#000000" fontSize="10">
      <math>
        <input>
          <e type="operand">z</e>
          <e type="operand">α</e>
          <e type="operand">yo</e>
          <e type="operand">α</e>
          <e type="operator" args="1">-</e>
          <e type="operand">yo</e>
          <e type="operator" args="1">-</e>
          <e type="operand">2</e>
          <e type="operand">2</e>
          <e type="function" args="6">mat</e>
          <e type="function" args="2">dint</e>
        </input>
        <result action="numeric">
          <e type="operand">31.6341</e>
        </result>
      </math>
    </region>
    <region left="432" top="1584" width="311" height="73" color="#000000" fontSize="10">
      <math>
        <input>
          <e type="operand">z</e>
          <e type="operand">y</e>
          <e type="operand">yo</e>
          <e type="operator" args="1">-</e>
          <e type="operand">yo</e>
          <e type="function" args="4">int</e>
          <e type="operand">x</e>
          <e type="operand">α</e>
          <e type="operator" args="1">-</e>
          <e type="operand">α</e>
          <e type="function" args="4">int</e>
          <e type="function" args="1">evalf</e>
          <e type="function" args="1">maple</e>
        </input>
        <result action="numeric">
          <e type="operand">31.6377</e>
        </result>
      </math>
    </region>
    <region left="54" top="1647" width="95" height="24" color="#000000" fontSize="10" isBreakable="false">
      <text lang="eng" fontFamily="Consolas" fontSize="10">
        <content>
          <p>As type II:</p>
        </content>
      </text>
    </region>
    <region left="189" top="1647" width="186" height="45" color="#000000" fontSize="10">
      <math>
        <input>
          <e type="operand">xo</e>
          <e type="operand">β</e>
          <e type="operand">y</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
          <e type="operand">β</e>
          <e type="operand">y</e>
          <e type="operator" args="2">+</e>
          <e type="bracket">(</e>
          <e type="operator" args="2">*</e>
          <e type="function" args="1">sqrt</e>
          <e type="operand">α</e>
          <e type="operator" args="2">*</e>
          <e type="operand">β</e>
          <e type="operator" args="2">/</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region left="189" top="1692" width="227" height="47" color="#000000" fontSize="10">
      <math>
        <input>
          <e type="operand">z</e>
          <e type="operand">xo</e>
          <e type="operand">β</e>
          <e type="operand">xo</e>
          <e type="operator" args="1">-</e>
          <e type="operand">β</e>
          <e type="operator" args="1">-</e>
          <e type="operand">2</e>
          <e type="operand">2</e>
          <e type="function" args="6">mat</e>
          <e type="function" args="2">dint</e>
        </input>
        <result action="numeric">
          <e type="operand">31.6346</e>
        </result>
      </math>
    </region>
    <region left="432" top="1692" width="311" height="73" color="#000000" fontSize="10">
      <math>
        <input>
          <e type="operand">z</e>
          <e type="operand">x</e>
          <e type="operand">xo</e>
          <e type="operator" args="1">-</e>
          <e type="operand">xo</e>
          <e type="function" args="4">int</e>
          <e type="operand">y</e>
          <e type="operand">β</e>
          <e type="operator" args="1">-</e>
          <e type="operand">β</e>
          <e type="function" args="4">int</e>
          <e type="function" args="1">evalf</e>
          <e type="function" args="1">maple</e>
        </input>
        <result action="numeric">
          <e type="operand">31.6377</e>
        </result>
      </math>
    </region>
    <region left="18" top="1746" width="60" height="24" color="#000000" fontSize="10">
      <math>
        <input>
          <e type="operand">Alvaro</e>
        </input>
      </math>
    </region>
  </regions>
</worksheet>