Question: 5. Problem: (20pts) (a) (10pts) Given f(x, y, z) = x2 + y2 - 222 + zInx, find Vf at the point (1, 1, 1

5. Problem: (20pts) (a) (10pts) Given f(x, y, z) = x2 + y2 - 222 + zInx, find Vf at the point (1, 1, 1 ). (b) (10pts) Find the angle between the vectors u = -li + 2j - 2k and v = 3i - 6j + 6k

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