V9.ptx

<exercise>
  <statement>
    <p>Consider the homogeneous system of equations 
    <md alignment="alignat">
                <xsl:attribute name="alignat-columns"><xsl:value-of select="alignCols"/></xsl:attribute>
              <xsl:for-each select="system/*">
                <mrow><xsl:value-of select="."/></mrow>
              </xsl:for-each>
    </md>
    </p>
    <ol>
        <li> Find the solution space of this system.</li>
        <li> Find a basis of the solution space.</li>
    </ol>
  </statement>
  <answer>
     <p><me>\operatorname{RREF}<xsl:value-of select="matrix"/>=<xsl:value-of select="rref"/></me></p>
     <ol>
          <li>The solution space is <m><xsl:value-of select="solutions"/></m> </li>
          <li>A basis of the solution space is <m><xsl:value-of select="basis"/></m>.</li>
      </ol>
  </answer>
</exercise>