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QUESTION 1 (a) Given that f(2, -1) = 6, f, (2, -1) - 2.5, and fy (2, -1) - -1.2, approximate f(2.2, -1.05). (5 marks)

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QUESTION 1 (a) Given that f(2, -1) = 6, f, (2, -1) - 2.5, and fy (2, -1) - -1.2, approximate f(2.2, -1.05). (5 marks) (b) Suppose x, y, z are variables related by the equation cos(yz) + 1 2 - rey where z = f(r, y) Determine the partial derivatives " and oz at (0, , , 1). (7 marks)

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