plus7

Functions used as arguments to other operators.

<math xmlns="http://www.w3.org/1998/Math/MathML">
  <apply>
    <apply>
      <csymbol cd="arith1">plus</csymbol>
      <csymbol cd="transc1">sin</csymbol>
      <csymbol cd="transc1">cos</csymbol>
    </apply>
    <ci>x</ci>
  </apply>
</math>

Author: MathML Specifications