z x 1. (3 points) Consider the equation x + y + z 8xyz = z....

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z x 1. (3 points) Consider the equation x + y + z 8xyz = z. Find 3 at the point (1, 1, 1). 2. (3 points) Find the directional derivative of f(x, y, z) = xyz + zy, as you leave the point (1, 1, 1) heading in the direction of the point (-3, 1, 4). z x 1. (3 points) Consider the equation x + y + z 8xyz = z. Find 3 at the point (1, 1, 1). 2. (3 points) Find the directional derivative of f(x, y, z) = xyz + zy, as you leave the point (1, 1, 1) heading in the direction of the point (-3, 1, 4).