Tables and Matrices (cont.)

<mtable 
  groupalign="decimalpoint left ...">
   <mtr><mtd><mrow>
        <maligngroup/>
        <mn> 8.44 </mn>
        <maligngroup/>
        <mi> x </mi>
        ...   
   </mrow></mtd></mtr>
   <mtr><mtd><mrow>
        <maligngroup/>
        <mn> 3.1 </mn>
        <maligngroup/>
        <mi> x </mi>
         ...
   </mrow></mtd></mtr>
</mtable>