rec-trig1

sin(x^3 + cos x)

W3C sample	WIRIS
	$x 3 x$

<math xmlns="http://www.w3.org/1998/Math/MathML">
  <apply>
    <sin/>
    <apply>
      <plus/>
      <apply>
        <power/>
        <ci>x</ci>
        <cn>3</cn>
      </apply>
      <apply>
        <cos/>
        <ci>x</ci>
      </apply>
    </apply>
  </apply>
</math>

Author: MathML 2 Recomendation