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Let f(x, y) = x2y4. At the point (−2, 1), find the following vectors. (a) in...

Let f(x, y) = x2y4. At the point (−2, 1), find the following vectors. (a) in the direction of maximum rate of change 64 Incorrect: (b) in the direction of minimum rate of change (c) in a direction in which the rate of change is zero

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