boost-react-native-bundle/boost_1_57_0/libs/math/doc/equations/special_functions_blurb22.mml

Boost library as in https://sourceforge.net/projects/boost/files/boost/1.57.0/

<math xmlns="http://www.w3.org/1998/Math/MathML" display="block">
  <mrow>
    <msub>
      <mtext>sinhc</mtext>
      <mi>a</mi>
    </msub>
    <mfenced>
      <mrow>
        <mi>x</mi>
      </mrow>
    </mfenced>
    <mspace width="1em"/>
    <mo>=</mo>
    <mspace width="1em"/>
    <mfrac>
      <mrow>
        <mi>sinh</mi>
        <mfenced>
          <mrow>
            <mfrac>
              <mrow>
                <mi>&#x03C0;</mi>
                <mi>x</mi>
              </mrow>
              <mi>a</mi>
            </mfrac>
          </mrow>
        </mfenced>
      </mrow>
      <mrow>
        <mfrac>
          <mrow>
            <mi>&#x03C0;</mi>
            <mi>x</mi>
          </mrow>
          <mi>a</mi>
        </mfrac>
      </mrow>
    </mfrac>
  </mrow>
</math>