.* Find ther critical point x* of subject to f(x) = x1²5x1x2 − 8x₁ x3 + 2x₂² − 4 xq x3 +6xz²+2x2 − 6x3 - 5 g(x) = -7x1-4x2 +5x3 = 5. Specify below the value of the Lagrange multiplier, A, and the value of the function f(x*). (Make sure you use g(x) as specified above: if you divide through by constants, the resulting value of λ can change!) In both cases, give your answer as an exact fraction or a decimal approximation accurate to at least 3 significant figures. 入= 数字 f(x*): 数字

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