partialdiff1

W3C sample	WIRIS
	$\frac{\partial^{3}f(x, y)}{\partial x^2\partial y}$

<math xmlns="http://www.w3.org/1998/Math/MathML">
  <apply>
    <partialdiff/>
    <bvar>
      <ci>x</ci>
      <degree>
        <cn>2</cn>
      </degree>
    </bvar>
    <bvar>
      <ci>y</ci>
    </bvar>
    <apply>
      <fn>
        <ci>f</ci>
      </fn>
      <ci>x</ci>
      <ci>y</ci>
    </apply>
  </apply>
</math>

Author: Design Science, Inc. (E. Cannon, E. Tabacman, R.Miner)