Let be a function that allows continuous second partial derivatives , we know that: Vf(x,y) = (36x³ – 4xy² ,16y³ – 4x²y – 32y² + 16y) fxx = = 108x? – 4y2 fyy = 48y2 – 4x² – 64y + 16 - fxy = -8xy Consider the critic point (a,b) with negative X coordinates , that point generates a saddle point. What's the value for a and b?

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