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      <header alignment="Center" color="#a9a9a9">&amp;[DATE] &amp;[TIME] - &amp;[FILENAME]</header>
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        <e type="operand">R</e>
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        <e type="operator" args="2">:</e>
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        <e type="operand">r</e>
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    <math decimalPlaces="4">
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        <p>the radius of the tube</p>
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        <e type="operand">R1</e>
        <e type="operand">0.1</e>
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        <p>Уравнение сферы </p>
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        <e type="operand">1</e>
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        <e type="operand">r</e>
        <e type="operator" args="2">-</e>
        <e type="bracket">(</e>
        <e type="operand">10</e>
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        <e type="operand">2</e>
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        <e type="bracket">(</e>
        <e type="operand">10</e>
        <e type="operator" args="2">^</e>
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        <e type="operand">x</e>
        <e type="operand">3</e>
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        <e type="bracket">(</e>
        <e type="operand">10</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>
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    <math decimalPlaces="4">
      <description active="true" position="Right" lang="rus">
        <p>Уравнение тора </p>
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        <e type="operand">f</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operand">x</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="bracket">(</e>
        <e type="operand">2</e>
        <e type="operator" args="2">^</e>
        <e type="operand">x</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="2">el</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">x</e>
        <e type="operand">3</e>
        <e type="function" preserve="true" args="2">el</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">R</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="bracket">(</e>
        <e type="operand">2</e>
        <e type="operator" args="2">^</e>
        <e type="operand">4</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="operand">x</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="bracket">(</e>
        <e type="operand">2</e>
        <e type="operator" args="2">^</e>
        <e type="operand">x</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="bracket">(</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>
        <e type="operator" args="2">:</e>
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  <region id="5" top="162" color="#000000" bgColor="#ffffff">
    <area collapsed="true">
      <title lang="rus">
        <p>Dragilev's Method</p>
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          <e type="operand">X0</e>
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          <e type="operand">N</e>
          <e type="function" args="4">D</e>
          <e type="operand">n</e>
          <e type="operand">f</e>
          <e type="function" preserve="true" args="1">rows</e>
          <e type="operand">1</e>
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          <e type="operator" args="2">:</e>
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          <e type="operator" args="2">:</e>
          <e type="operand">j</e>
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          <e type="operand">j</e>
          <e type="operand">j</e>
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          <e type="operand">k</e>
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          <e type="operator" args="2">:</e>
          <e type="operand">k</e>
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          <e type="operand">k</e>
          <e type="operand">k</e>
          <e type="operand">1</e>
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          <e type="operator" args="2">:</e>
          <e type="operand">m</e>
          <e type="operand">j</e>
          <e type="operand">k</e>
          <e type="function" preserve="true" args="3">el</e>
          <e type="operand">f</e>
          <e type="operand">j</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">x</e>
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          <e type="function" preserve="true" args="2">el</e>
          <e type="function" preserve="true" args="2">diff</e>
          <e type="operator" args="2">:</e>
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          <e type="function" preserve="true" args="4">for</e>
          <e type="operand" style="string">Матрица Якоби</e>
          <e type="operand">2</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="4">line</e>
          <e type="operand">x</e>
          <e type="function" args="1">Jacobi</e>
          <e type="operand">m</e>
          <e type="operator" args="2">:</e>
          <e type="operand" style="string">Матрица  правых частей алгебраических уравнений</e>
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          <e type="operand">1</e>
          <e type="operator" args="1">-</e>
          <e type="bracket">(</e>
          <e type="operand">x</e>
          <e type="function" args="1">Jacobi</e>
          <e type="operand">1</e>
          <e type="operand">n</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="operand">n</e>
          <e type="operand">n</e>
          <e type="function" preserve="true" args="5">submatrix</e>
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          <e type="operator" args="2">:</e>
          <e type="operand" style="string">Определители </e>
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          <e type="operand">x</e>
          <e type="function" args="1">Jacobi</e>
          <e type="operand">1</e>
          <e type="operand">n</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="operand">1</e>
          <e type="operand">n</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="function" preserve="true" args="5">submatrix</e>
          <e type="operator" args="2">:</e>
          <e type="operand">n</e>
          <e type="operand">2</e>
          <e type="operator" args="2">&gt;</e>
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          <e type="operand">1</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">b</e>
          <e type="operand">A</e>
          <e type="operand">1</e>
          <e type="operand">n</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="operand">2</e>
          <e type="operand">n</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="function" preserve="true" args="5">submatrix</e>
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          <e type="operator" args="1">-</e>
          <e type="operator" args="2">:</e>
          <e type="operand">Δ</e>
          <e type="operand">n</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">A</e>
          <e type="operand">1</e>
          <e type="operand">n</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="operand">1</e>
          <e type="operand">n</e>
          <e type="operand">2</e>
          <e type="operator" args="2">-</e>
          <e type="function" preserve="true" args="5">submatrix</e>
          <e type="operand">b</e>
          <e type="function" preserve="true" args="2">augment</e>
          <e type="function" preserve="true" args="1">det</e>
          <e type="operator" args="1">-</e>
          <e type="operator" args="2">:</e>
          <e type="operand">Δ</e>
          <e type="operand">n</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">A</e>
          <e type="function" preserve="true" args="1">det</e>
          <e type="operator" args="1">-</e>
          <e type="operator" args="2">:</e>
          <e type="operand">k</e>
          <e type="operand">2</e>
          <e type="operator" args="2">:</e>
          <e type="operand">k</e>
          <e type="operand">n</e>
          <e type="operand">2</e>
          <e type="operator" args="2">-</e>
          <e type="operator" args="2">≤</e>
          <e type="operand">k</e>
          <e type="operand">k</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="operator" args="2">:</e>
          <e type="operand">Δ</e>
          <e type="operand">k</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">A</e>
          <e type="operand">1</e>
          <e type="operand">n</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="operand">1</e>
          <e type="operand">k</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="function" preserve="true" args="5">submatrix</e>
          <e type="operand">b</e>
          <e type="operand">A</e>
          <e type="operand">1</e>
          <e type="operand">n</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="operand">k</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="operand">n</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="function" preserve="true" args="5">submatrix</e>
          <e type="function" preserve="true" args="3">augment</e>
          <e type="function" preserve="true" args="1">det</e>
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          <e type="operator" args="2">:</e>
          <e type="operand">1</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="3">line</e>
          <e type="function" preserve="true" args="4">for</e>
          <e type="operand">4</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="6">line</e>
          <e type="operand">Δ</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">b</e>
          <e type="operator" args="2">:</e>
          <e type="operand">Δ</e>
          <e type="operand">n</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">A</e>
          <e type="function" preserve="true" args="1">det</e>
          <e type="operator" args="2">:</e>
          <e type="operand">2</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="4">line</e>
          <e type="function" preserve="true" args="3">if</e>
          <e type="operand">dS</e>
          <e type="operand">Δ</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="bracket">(</e>
          <e type="operand">2</e>
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          <e type="operand">Δ</e>
          <e type="operand">2</e>
          <e type="function" preserve="true" args="2">el</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">Δ</e>
          <e type="operand">3</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="bracket">(</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">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">:</e>
          <e type="operand">i</e>
          <e type="operand">n</e>
          <e type="operator" args="2">≤</e>
          <e type="operand">i</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="operator" args="2">:</e>
          <e type="operand">D2</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">Δ</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">dS</e>
          <e type="operator" args="2">/</e>
          <e type="operator" args="2">:</e>
          <e type="function" preserve="true" args="4">for</e>
          <e type="operand">1</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="3">line</e>
          <e type="operand">t</e>
          <e type="operand">x</e>
          <e type="function" args="2">D1</e>
          <e type="operand">D2</e>
          <e type="operator" args="2">:</e>
          <e type="operand">r</e>
          <e type="operand">X0</e>
          <e type="operand">tmin</e>
          <e type="operand">tmax</e>
          <e type="operand">N</e>
          <e type="operand">t</e>
          <e type="operand">x</e>
          <e type="function" args="2">D1</e>
          <e type="function" preserve="true" args="5">rkfixed</e>
          <e type="operator" args="2">:</e>
          <e type="operand">13</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="15">line</e>
          <e type="operator" args="2">:</e>
        </input>
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    <region id="7" left="9" top="855" width="68" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
      <math decimalPlaces="4">
        <input>
          <e type="operand">tmin</e>
          <e type="operand">0</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region id="8" left="108" top="855" width="93" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
      <math decimalPlaces="4">
        <input>
          <e type="operand">tmax</e>
          <e type="operand">25.2</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region id="9" left="225" top="855" width="76" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
      <math decimalPlaces="4">
        <input>
          <e type="operand">Δt</e>
          <e type="operand">0.06</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region id="10" left="333" top="855" width="72" height="41" color="#000000" bgColor="#ffffff" fontSize="10">
      <math decimalPlaces="4">
        <input>
          <e type="operand">N</e>
          <e type="operand">tmax</e>
          <e type="operand">Δt</e>
          <e type="operator" args="2">/</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region id="11" left="504" top="855" width="237" height="36" color="#000000" bgColor="#ffffff" fontSize="10">
      <math decimalPlaces="4">
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          <e type="operand">X0</e>
          <e type="operand">0.0073</e>
          <e type="operand">1.1187</e>
          <e type="operator" args="1">-</e>
          <e type="operand">0.4726</e>
          <e type="operand">1</e>
          <e type="operand">3</e>
          <e type="function" preserve="true" args="5">mat</e>
          <e type="function" preserve="true" args="1">transpose</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
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      <math decimalPlaces="4">
        <description active="true" position="Right" lang="rus">
          <p>Матрица координат    </p>
        </description>
        <input>
          <e type="operand">B</e>
          <e type="operand">X0</e>
          <e type="operand">tmin</e>
          <e type="operand">tmax</e>
          <e type="operand">N</e>
          <e type="function" args="4">D</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region id="13" left="396" top="891" width="233" height="26" color="#000000" bgColor="#ffffff" fontSize="10">
      <math decimalPlaces="4">
        <input>
          <e type="operand">B1</e>
          <e type="operand">B</e>
          <e type="operand">1</e>
          <e type="operand">N</e>
          <e type="operand">2</e>
          <e type="operand">4</e>
          <e type="function" preserve="true" args="5">submatrix</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region id="14" left="162" top="936" width="71" height="63" color="#000000" bgColor="#ffffff" fontSize="10">
      <math decimalPlaces="6">
        <description active="true" position="Top" lang="eng">
          <p>45°&lt;=</p>
        </description>
        <input>
          <e type="operand">1</e>
          <e type="operand">1</e>
          <e type="operator" args="1">-</e>
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          <e type="operand">1</e>
          <e type="operand">0</e>
          <e type="operand">0</e>
          <e type="operand">0</e>
          <e type="operand">0</e>
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          <e type="operand">3</e>
          <e type="function" preserve="true" args="11">mat</e>
        </input>
      </math>
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      <math decimalPlaces="6">
        <description active="true" position="Top" lang="eng">
          <p>45°=&gt;</p>
        </description>
        <input>
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          <e type="operand">1</e>
          <e type="operand">0</e>
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          <e type="operand">1</e>
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        </input>
      </math>
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      <math decimalPlaces="6">
        <description active="true" position="Top" lang="eng">
          <p>Vertical</p>
        </description>
        <input>
          <e type="operand">0</e>
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          <e type="operand">0</e>
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          <e type="operand">0</e>
          <e type="operand">0</e>
          <e type="operand">0</e>
          <e type="operand">0</e>
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          <e type="operand">3</e>
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        </input>
      </math>
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    <region id="17" left="432" top="936" width="62" height="63" color="#000000" bgColor="#ffffff" fontSize="10">
      <math decimalPlaces="6">
        <description active="true" position="Top" lang="eng">
          <p>Horizontal</p>
        </description>
        <input>
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          <e type="operand">0</e>
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          <e type="operand">1</e>
          <e type="operand">0</e>
          <e type="operand">0</e>
          <e type="operand">0</e>
          <e type="operand">0</e>
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          <e type="operand">3</e>
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        </input>
      </math>
    </region>
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      <math>
        <input>
          <e type="operand">0.8232</e>
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          <e type="operand">0.4194</e>
          <e type="operator" args="1">-</e>
          <e type="operand">0.3827</e>
          <e type="operand">0.5677</e>
          <e type="operand">0.6187</e>
          <e type="operator" args="1">-</e>
          <e type="operand">0.543</e>
          <e type="operand">0.009</e>
          <e type="operand">0.6643</e>
          <e type="operand">0.7474</e>
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          <e type="operand">3</e>
          <e type="function" preserve="true" args="11">mat</e>
        </input>
      </math>
    </region>
    <region id="19" left="9" top="963" width="94" height="63" color="#000000" bgColor="#ffffff" fontSize="10">
      <math decimalPlaces="4">
        <input>
          <e type="operand">γ</e>
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          <e type="operand">1</e>
          <e type="operand">0</e>
          <e type="operand">0</e>
          <e type="operand">0</e>
          <e type="operand">0</e>
          <e type="operand">3</e>
          <e type="operand">3</e>
          <e type="function" preserve="true" args="11">mat</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region id="20" top="1035" color="#000000" bgColor="#ffffff">
      <area terminator="true" />
    </region>
  </region>
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    <math optimize="2" decimalPlaces="4">
      <description active="true" position="Top" lang="rus">
        <p>AlgLib Solver for a system of nonlinear equations(Uni)</p>
      </description>
      <input>
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        <e type="operand">k</e>
        <e type="operand">1</e>
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        <e type="function" preserve="true" args="1">rows</e>
        <e type="function" preserve="true" args="2">range</e>
        <e type="operand">u</e>
        <e type="operand">k</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operand">x</e>
        <e type="operand">k</e>
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        <e type="operator" args="2">:</e>
        <e type="function" preserve="true" args="3">for</e>
        <e type="operand">x</e>
        <e type="function" args="1">Jac</e>
        <e type="operand">u</e>
        <e type="function" args="1">f</e>
        <e type="operand">u</e>
        <e type="function" preserve="true" args="2">Jacobian</e>
        <e type="operator" args="2">:</e>
        <e type="operand">StepMax</e>
        <e type="operand">0</e>
        <e type="operator" args="2">:</e>
        <e type="operand">Eps</e>
        <e type="operand">10</e>
        <e type="operand">14</e>
        <e type="operator" args="1">-</e>
        <e type="operator" args="2">^</e>
        <e type="operator" args="2">:</e>
        <e type="operand">u</e>
        <e type="operand">X0</e>
        <e type="operand">StepMax</e>
        <e type="operand">Eps</e>
        <e type="operand">x</e>
        <e type="function" args="1">f</e>
        <e type="operand">x</e>
        <e type="function" args="1">Jac</e>
        <e type="function" preserve="true" args="5">al_nleqsolve</e>
        <e type="operator" args="2">:</e>
        <e type="operand">5</e>
        <e type="operand">1</e>
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        <e type="operator" args="2">:</e>
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      <description active="true" position="Top" lang="rus">
        <p>Approximation by random numbers</p>
      </description>
      <input>
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        <e type="operand">1.5</e>
        <e type="operator" args="2">:</e>
        <e type="operand">i</e>
        <e type="operand">2</e>
        <e type="operand">x</e>
        <e type="function" args="1">f</e>
        <e type="function" preserve="true" args="1">rows</e>
        <e type="function" preserve="true" args="2">range</e>
        <e type="operand">u</e>
        <e type="operand">i</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operand">u</e>
        <e type="operand">i</e>
        <e type="operand">1</e>
        <e type="operator" args="2">-</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operand">9</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="1">Random</e>
        <e type="operator" args="2">*</e>
        <e type="operand">3</e>
        <e type="operator" args="2">-</e>
        <e type="bracket">(</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operator" args="2">+</e>
        <e type="operator" args="2">:</e>
        <e type="function" preserve="true" args="3">for</e>
        <e type="operand">u</e>
        <e type="operand">3</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="5">line</e>
        <e type="operator" args="2">:</e>
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  <region id="23" left="9" top="1287" width="87" height="79" color="#000000" bgColor="#ffffff" fontSize="10">
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        <e type="operand">f</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operand">f</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operand">0</e>
        <e type="operand">3</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="5">mat</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
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    <math decimalPlaces="4">
      <input>
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        <e type="operand">180</e>
        <e type="function" preserve="true" args="2">range</e>
        <e type="operand">a</e>
        <e type="operand">t</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operand">result</e>
        <e type="function" preserve="true" args="1">transpose</e>
        <e type="operator" args="2">:</e>
        <e type="operand">t</e>
        <e type="operand">1</e>
        <e type="operator" args="2">≡</e>
        <e type="operand">res</e>
        <e type="operand">a</e>
        <e type="operand">t</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operator" args="2">:</e>
        <e type="operand">res</e>
        <e type="operand">res</e>
        <e type="operand">a</e>
        <e type="operand">t</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="function" preserve="true" args="2">stack</e>
        <e type="operator" args="2">:</e>
        <e type="function" preserve="true" args="3">if</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">line</e>
        <e type="function" preserve="true" args="3">for</e>
        <e type="operand">t</e>
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        <e type="operand">γ</e>
        <e type="operator" args="2">*</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="2">col</e>
        <e type="operand">t</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operator" args="2">:</e>
        <e type="operand">t</e>
        <e type="function" args="1">y</e>
        <e type="operand">res</e>
        <e type="operand">γ</e>
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        <e type="operand">2</e>
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        <e type="operand">t</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operator" args="2">:</e>
        <e type="operand">τ</e>
        <e type="operand">1</e>
        <e type="operand">a</e>
        <e type="function" preserve="true" args="1">rows</e>
        <e type="function" preserve="true" args="2">range</e>
        <e type="operator" args="2">:</e>
        <e type="operand">4</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="6">line</e>
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      <input>
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        <e type="function" preserve="true" args="2">col</e>
        <e type="operand">B1</e>
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        <e type="function" preserve="true" args="2">augment</e>
        <e type="operand">t</e>
        <e type="operand">1</e>
        <e type="operator" args="2">≡</e>
        <e type="operand">path</e>
        <e type="operand">t</e>
        <e type="function" args="1">x</e>
        <e type="operand">t</e>
        <e type="function" args="1">y</e>
        <e type="operand" style="string">.</e>
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        <e type="operand">1</e>
        <e type="operand">5</e>
        <e type="function" preserve="true" args="7">mat</e>
        <e type="operator" args="2">:</e>
        <e type="operand">path</e>
        <e type="operand">path</e>
        <e type="operand">t</e>
        <e type="function" args="1">x</e>
        <e type="operand">t</e>
        <e type="function" args="1">y</e>
        <e type="operand" style="string">.</e>
        <e type="operand">10</e>
        <e type="operand" style="string">red</e>
        <e type="operand">1</e>
        <e type="operand">5</e>
        <e type="function" preserve="true" args="7">mat</e>
        <e type="function" preserve="true" args="2">stack</e>
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        <e type="function" preserve="true" args="3">if</e>
        <e type="operand">x</e>
        <e type="operand">3</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="5">sys</e>
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        <e type="operand">t</e>
        <e type="operand">x</e>
        <e type="function" args="2">D1</e>
        <e type="function" preserve="true" args="5">rkfixed</e>
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    </math>
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