Question: (a) Find the gradient vector Vf (2, 3) where f(x, y) = x sin ry. (b) Find the directional derivative Duf at the point

(a) Find the gradient vector Vf (2, 3) where f(x, y) =

(a) Find the gradient vector Vf (2, 3) where f(x, y) = x sin ry. (b) Find the directional derivative Duf at the point (x, y) = 1. u= (c) Find the maximum rate of increase of f at (2,4). [1] (2,) in the direction [1] [1]

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