<exercise>
<statement>
<p>Show how to find the inverse of the matrix <m><xsl:value-of select="name"/>=<xsl:value-of select="matrix"/></m>.</p>
</statement>
<answer>
<me><xsl:value-of select="name"/>^{-1}=<xsl:value-of select="inverse"/></me>
</answer>
</exercise>