variables
  x[2] in (0; 0);

function f(x[2])
  return(x(2); -max(-5, min(5, 13*x(1) + 7*x(2))) + x(1));
end

/*function v(u[2])
  return(u(1)*((205*u(1))/168 + u(2)/24) + (u(1)/24 + (13*u(2))/168)*u(2));
end*/

function v(u[2])
  return (u(1)*(1.220238095*u(1) + 0.04166666667*u(2)) + (0.04166666667*u(1) + 0.07738095238*u(2))*u(2));
end
