Example ex4-057

Prev: ex4-056

Next: ex4-058

<math>
<apply>
  <exists/>
  <bvar><ci> x </ci></bvar>
  <condition>
    <apply><lt/><ci>x</ci><cn>3</cn></apply>
  </condition>
  <apply>
    <eq/>
    <apply>
      <power/><ci>x</ci><cn>2</cn>
    </apply>
    <cn>4</cn>
  </apply>
</apply>
</math>