function [ x,y] =funciones(x,y)
%UNTITLED Summary of this function goes here
%   Detailed explanation goes here
-x^2-y^2+2*x+2*x*y-y
end

function [x,y] = g(x,y)
%UNTITLED Summary of this function goes here
%   Detailed explanation goes here
(x^4)+(y^2) 

end
