function value = multi ( x )

%*****************************************************************************80
%
%% multi evaluates the multi function.
%
%  Discussion:
%
%    In the interval [ -4, 3 ] there are two places where f(x) = 0.
%
%  Licensing:
%
%    This code is distributed under the GNU LGPL license.
%
%  Modified:
%
%    21 September 2019
%
%  Input:
%
%    real x, the argument.
%
%  Output:
%
%    real value, the function value.
%
  value = x.^4 - 6.0 * x.^2 + 8.0 * x - 3.0;

  return
end

