Write the Linear Approximation to f(x, y) = x(1 + y)-¹ at (a, b) = (8, 1) in the form f(a+h,b+k) f(a, b) + fx(a, b)h + fy(a, b)k (Give an exact answer. Use decimal notation and fractions where needed.) ƒ(8 + h, 1+ k) ≈ Use it to estimate 7.97 2.05* (Use decimal notation. Give your answer to three decimal places.)

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