阿摩線上測驗
13.(5%) Let f(x, y) = 2x2 + y2 + 2xy + 4x + 2y+ 7. Find the minimum value of the function f(x,y) subject to the constraint 4x2 + 4xy = 1.
(A) 4
(B) 5
(C) 6
(D) None of the above
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統計： A(1), B(2), C(1), D(0), E(0) #3103775
統計： A(1), B(2), C(1), D(0), E(0) #3103775
