function fx = p17_fx ( x )
%*****************************************************************************80
%
%% P17_FX evaluates the function for problem 17.
%
% Discussion:
%
% This simple example is of historical interest, since it was used
% by Wallis to illustrate the use of Newton's method, and has been
% a common example ever since.
%
% Licensing:
%
% This code is distributed under the MIT license.
%
% Modified:
%
% 07 July 2011
%
% Author:
%
% John Burkardt
%
% Input:
%
% real X(*), the point at which F is to be evaluated.
%
% Output:
%
% real FX(*), the value of the function at X.
%
fx = x.^3 - 2.0 * x - 5.0;
return
end