power8

Test using functions as arguments to other operators

W3C sample	WIRIS
	$\sin ^2+\cos ^2$

<math xmlns="http://www.w3.org/1998/Math/MathML">
  <apply>
    <plus/>
    <apply>
      <power/>
      <sin/>
      <cn>2</cn>
    </apply>
    <apply>
      <power/>
      <cos/>
      <cn>2</cn>
    </apply>
  </apply>
</math>

Author: Design Science, Inc (D. Doyle)