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        <e type="operand">1</e>
        <e type="operand">1</e>
        <e type="operator" args="1">-</e>
        <e type="operand">1</e>
        <e type="operand">0.5</e>
        <e type="operand">2</e>
        <e type="operand">2</e>
        <e type="function" args="6">mat</e>
        <e type="operand">0.5</e>
        <e type="operand">0</e>
        <e type="operand">1</e>
        <e type="operator" args="1">-</e>
        <e type="operand">0.5</e>
        <e type="operand">2</e>
        <e type="operand">2</e>
        <e type="function" args="6">mat</e>
        <e type="operand">0.5</e>
        <e type="operator" args="1">-</e>
        <e type="operand">1</e>
        <e type="operator" args="1">-</e>
        <e type="operand">0</e>
        <e type="operand">0.5</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="operand">1</e>
        <e type="operand">3</e>
        <e type="function" args="5">mat</e>
        <e type="operator" args="2">:</e>
        <e type="operand">X</e>
        <e type="operand">Y</e>
        <e type="operand">Z</e>
        <e type="operand">3</e>
        <e type="operand">1</e>
        <e type="function" args="5">mat</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" args="4">line</e>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">h</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">1</e>
        <e type="operator" args="2">-</e>
        <e type="bracket">(</e>
        <e type="operand">3</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">3</e>
        <e type="operator" args="2">^</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="2">-</e>
        <e type="operator" args="2">:</e>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">s</e>
        <e type="operand">x</e>
        <e type="operand">5</e>
        <e type="operator" args="2">^</e>
        <e type="operand">y</e>
        <e type="operand">5</e>
        <e type="operator" args="2">^</e>
        <e type="operator" args="2">+</e>
        <e type="operand">x</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>
        <e type="operator" args="2">:</e>
        <e type="operand">5</e>
        <e type="operand">1</e>
        <e type="function" args="7">sys</e>
      </input>
    </xyplot>
  </region>
</regions>