1- cos(ry) (x2 + y?)/(x? + y) if (x, y) + (0,0) Let f(x, y) =...

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1- cos(ry) (x2 + y?)/(x? + y²) if (x, y) + (0,0) Let f(x, y) = if (2, y) = (0,0) First evaluate the gradient vector Vf(0,0) and then evaluate the directional derivative of f (x, y) in the direction of the vector 102i + 102j at the point (0, 0). In addition, using the results of your evaluations, determine whether or not f is differentiable at (0, 0). Please select file(s) Select file(s) 1- cos(ry) (x2 + y?)/(x? + y²) if (x, y) + (0,0) Let f(x, y) = if (2, y) = (0,0) First evaluate the gradient vector Vf(0,0) and then evaluate the directional derivative of f (x, y) in the direction of the vector 102i + 102j at the point (0, 0). In addition, using the results of your evaluations, determine whether or not f is differentiable at (0, 0). Please select file(s) Select file(s)

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