Example ex4-181

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Next: ex4-182

x x 3

<math>
<apply>
  <sin/>
  <apply>
    <plus/>
    <apply><cos/>
      <ci> x </ci>
    </apply>
    <apply>
      <power/>
      <ci> x </ci>
      <cn> 3 </cn>
    </apply>
  </apply>
</apply>
</math>