function x = p11_sol ( )

%*****************************************************************************80
%
%% p11_sol() returns the solution for problem 11.
%
%  Licensing:
%
%    This code is distributed under the MIT license.
%
%  Modified:
%
%    03 February 2012
%
%  Author:
%
%    John Burkardt
%
%  Output:
%
%    real x, the solution.
%
  x = 1.0 / 3.0;

  return
end
