V(1, 1, 4) 1, 1, 4)| is increasing most rapidly at the point (1, 1, 4) Calculate the direction in which the function f(x, y, z) = xy - In(z), 33 (4i + 4j - k) V33 (4i + 4j - k) 33 V33 (4i + 4j - k) W33(4i-4j + k)

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