 'a' and 'b'

</pre><h4><a name="Examples">Examples</a></h4><pre>

   Any numerical results shown for this example may differ between
   platforms as the results depend on the SPICE kernels used as input
   and the machine specific arithmetic implementation.

      %
      % Define two vector sets.
      %
      a = [ [ 6, 6, 6]', ...
            [ 6, 6, 6]', ...
            [ 6, 6, 0]', ...
            [ 6, 0, 0]' ]

      b = [ [ 2, 0, 0]', ...
            [-3, 0, 0]', ...
            [ 0, 7, 0]', ...
   