G4.ptx

<exercise>
  <statement>
      <p>Explain how to find a basis for the eigenspace associated to the eigenvalue <m><xsl:value-of select="eigenvalue"/></m> in the matrix <me><xsl:value-of select="matrix"/></me></p>
  </statement>
  <answer>
      <p><me>\operatorname{RREF}<xsl:value-of select="matrix-minus-lambda"/>=<xsl:value-of select="rref"/></me></p>
      <p>A basis of the eigenspace is <m><xsl:value-of select="basis"/></m>.</p>
  </answer>
</exercise>