<exercise>
<statement>
<p>Explain how to find the eigenvalues of the matrix <m><xsl:value-of select="matrix"/></m>.</p>
</statement>
<answer>
<p>The characteristic polynomial of <m><xsl:value-of select="matrix"/></m> is <m><xsl:value-of select="charpoly"/></m>.</p>
<p>The eigenvalues of <m><xsl:value-of select="matrix"/></m> are <m><xsl:value-of select="e1"/></m> and <m><xsl:value-of select="e2"/></m>.</p>
</answer>
</exercise>
