Question: In x Question 4. Let f(x, y) = 2 2 (i) Find the gradient of f. (ii) Find the directional derivative of f at (1,

In x Question 4. Let f(x, y) = 2 2 (i)

In x Question 4. Let f(x, y) = 2 2 (i) Find the gradient of f. (ii) Find the directional derivative of f at (1, 2) in the direction of the vector u = (;, )

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