path: root/doc/context/sources/general/manuals/mathml/pc-d-001.xml

<math xmlns='http://www.w3c.org/mathml' version='2.0'>
  <apply> <eq/>
    <apply> <diff/> 
      <bvar> <ci> x </ci> </bvar> 
      <ci> a </ci>
    </apply>
    <ci> 0 </ci>
  </apply>
</math>