e 1. Consider the surface defined by z = x² + eln(x - y). Let f(x,y) = x² + ³y ln(x−y). (a) Compute Vf at the point (1,0). (b) Compute the derivative of f(x, y) at the point (1,0) in the direction (3,-4). This loc You can others t (c) Explain the geometric relationship between the answer found in part (a) and the surface defined above.

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