f(x) = = -6 x + 3 3 3-x+6 if x < -5 if -5 < x < 5 if x ≥ 5

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Q: Find the linearization L(x, y, z) of the f(x, y, z) = 6(x3 + y3 + z3)1/2 at the point (1, 2, 3).

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