  <mtd><mn>1.0</mn></mtd>
   <mtd><mn>3.0</mn></mtd>
   <mtd><mrow><mo>-</mo><mn>4.0</mn></mrow></mtd>
   <mtd><mn>3.0</mn></mtd>
</mtr>

<mtr>
   <mtd><mn>1.0</mn></mtd>
   <mtd><mn>3.0</mn></mtd>
   <mtd><mrow><mo>-</mo><mn>4.0</mn></mrow></mtd>
   <mtd><mn>4.0</mn></mtd>
</mtr>
</mtable></mfenced>
 <mtext>,</mtext>
</math></td><td class="formula2">&#xa0;</td></tr></table></div>

together with estimates of the condition number and forward error bounds for each eigenvalue and eigenvector.  The option to ba