Answer: Near a buoy, the depth of a lake at the point with
Chapter 11, Problem 11.6.22(choose chapter or problem)
Near a buoy, the depth of a lake at the point with coordinates is , where , , and are measured in meters. A fisherman in a small boat starts at the point and moves toward the buoy, which is located at . Is the water under the boat getting deeper or shallower when he departs? Explain.
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