Question

Pun

請問這題怎麼算？謝謝

(1)
若f(x,y)=(x-1)+(y+1)+(x-2y+1),試求此函數的最小值為下列何者?
10 8
(1) (2) (3)1 (4)2 (5)3
3

Answer 1

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Pun

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