function x = a123_null_right ( )

%*****************************************************************************80
%
%% A123_NULL_RIGHT returns a right null vector of the A123 matrix.
%
%  Licensing:
%
%    This code is distributed under the MIT license.
%
%  Modified:
%
%    09 March 2015
%
%  Author:
%
%    John Burkardt
%
%  Output:
%
%    real X(3,1), a right null vector.
%
  x = [ ...
    1.0; ...
   -2.0; ...
    1.0 ];

  return
end
