Display:

$\left(\begin{array}{c}x\\ y\end{array}\right)\to \left(\begin{array}{c}f(x, y)\\ g(x, y)\end{array}\right)$

Source:

<apply>
     <tendsto/>
     <vector>
          <ci> x </ci>
          <ci> y </ci>
     </vector>
     <vector>
          <apply>
               <ci type="fn"> f </ci>
               <ci> x </ci>
               <ci> y </ci>
          </apply>
          <apply>
               <ci type="fn"> g </ci>
               <ci> x </ci>
               <ci> y </ci>
          </apply>
     </vector>
</apply>