Seja F(u,v)= f(u+v, u-v) com f(2,0)= 1, \frac{\partial f}{\partial x} (2,0)= -1, \frac{\partial f}{\partial y} (2,0)= 2, \frac{\partial ^2 f}{\partial x^2} (2,0)= 1, \frac{\partial ^2 f}{\partial y^2} (2,0)= 2, \frac{\partial ^2 f}{\partial x \partial y} (2,0)...