Question: Given that f is a differentiable function with f (2, 5) = 6, f x (2, 5) = 1, and f y (2, 5) =

Given that f is a differentiable function with f (2, 5) = 6, fx(2, 5) = 1, and fy(2, 5) = -1, use a linear approximation to estimate f(2.2, 4.9).

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