270. f(x, y, z) = 1 √x² + y² + z², B = {(x, y, z) |x² + y² + z² ≤ 9, y ≥ 0, z ≥ 0} N 3 2 0 0 1 y 2 3-3 0 X 3

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A: This question is based on Partial Derivative.

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