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          <e type="operand">m</e>
          <e type="operand">1</e>
          <e type="operand">φ</e>
          <e type="function" args="1">cos</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="operand">φ</e>
          <e type="function" args="1">cos</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
          <e type="operator" args="2">*</e>
          <e type="operand">m</e>
          <e type="operand">2</e>
          <e type="operator" args="2">^</e>
          <e type="operator" args="2">+</e>
          <e type="function" args="1">sqrt</e>
          <e type="operand">R</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="2">≡</e>
          <e type="operand">α</e>
          <e type="operand">φ</e>
          <e type="function" args="1">sin</e>
          <e type="operand">2</e>
          <e type="operand">1</e>
          <e type="operand">m</e>
          <e type="operand">1</e>
          <e type="operand">φ</e>
          <e type="function" args="1">cos</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="operand">φ</e>
          <e type="function" args="1">cos</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
          <e type="operator" args="2">*</e>
          <e type="operand">m</e>
          <e type="operand">2</e>
          <e type="operator" args="2">^</e>
          <e type="operator" args="2">+</e>
          <e type="function" args="1">sqrt</e>
          <e type="operator" args="2">/</e>
          <e type="operand">1</e>
          <e type="operand">m</e>
          <e type="operator" args="2">+</e>
          <e type="operand">φ</e>
          <e type="function" args="1">cos</e>
          <e type="operator" args="2">-</e>
          <e type="operand">2</e>
          <e type="operand">1</e>
          <e type="operand">m</e>
          <e type="operand">1</e>
          <e type="operand">φ</e>
          <e type="function" args="1">cos</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="operand">φ</e>
          <e type="function" args="1">cos</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
          <e type="operator" args="2">*</e>
          <e type="operand">m</e>
          <e type="operand">2</e>
          <e type="operator" args="2">^</e>
          <e type="operator" args="2">+</e>
          <e type="function" args="1">sqrt</e>
          <e type="operator" args="2">/</e>
          <e type="function" args="2">atan</e>
          <e type="operator" args="2">≡</e>
          <e type="operand">a</e>
          <e type="operand">2</e>
          <e type="operand">1</e>
          <e type="operand">m</e>
          <e type="operand">1</e>
          <e type="operand">φ</e>
          <e type="function" args="1">cos</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="operand">φ</e>
          <e type="function" args="1">cos</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
          <e type="operator" args="2">*</e>
          <e type="operand">m</e>
          <e type="operand">2</e>
          <e type="operator" args="2">^</e>
          <e type="operator" args="2">+</e>
          <e type="function" args="1">sqrt</e>
          <e type="operand">R</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="1">-</e>
          <e type="operator" args="2">≡</e>
          <e type="operand">α</e>
          <e type="operand">φ</e>
          <e type="function" args="1">sin</e>
          <e type="operand">2</e>
          <e type="operand">1</e>
          <e type="operand">m</e>
          <e type="operand">1</e>
          <e type="operand">φ</e>
          <e type="function" args="1">cos</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="operand">φ</e>
          <e type="function" args="1">cos</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
          <e type="operator" args="2">*</e>
          <e type="operand">m</e>
          <e type="operand">2</e>
          <e type="operator" args="2">^</e>
          <e type="operator" args="2">+</e>
          <e type="function" args="1">sqrt</e>
          <e type="operator" args="2">/</e>
          <e type="operator" args="1">-</e>
          <e type="operand">1</e>
          <e type="operand">m</e>
          <e type="operator" args="2">+</e>
          <e type="operand">φ</e>
          <e type="function" args="1">cos</e>
          <e type="operator" args="2">-</e>
          <e type="operand">2</e>
          <e type="operand">1</e>
          <e type="operand">m</e>
          <e type="operand">1</e>
          <e type="operand">φ</e>
          <e type="function" args="1">cos</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="operand">φ</e>
          <e type="function" args="1">cos</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
          <e type="operator" args="2">*</e>
          <e type="operand">m</e>
          <e type="operand">2</e>
          <e type="operator" args="2">^</e>
          <e type="operator" args="2">+</e>
          <e type="function" args="1">sqrt</e>
          <e type="operator" args="2">/</e>
          <e type="operator" args="1">-</e>
          <e type="function" args="2">atan</e>
          <e type="operator" args="2">≡</e>
          <e type="operand">4</e>
          <e type="operand">1</e>
          <e type="function" args="6">mat</e>
        </result>
      </math>
    </region>
  </regions>
</worksheet>