Question: If f(x, y) = xy, find the gradient vector Vf(7, 5). Vf(7,5) = Use the gradient vector to find the tangent line to the

If f(x, y) = xy, find the gradient vector Vf(7, 5). Vf(7,5) = Use the gradient vector to find the tangent line to the level curve f(x, y) = 35 at the point (7,

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