問題詳情
19.若二次函數 y＝x2＋6x＋k 的最小值為 3，則 k＝？
(A) 12
(B) 6
(C) 3
(D) －6。
(A) 12
(B) 6
(C) 3
(D) －6。
參考答案
答案：A
難度：計算中-1
書單：沒有書單，新增
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