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15.關於二次函數y=-4(x-2)2-3的敘述,下列何者正確?(A)當x=2時,y有最大值-3 (B)當x=2時,y有最小值-3(C)當x=-2時,y有最大值-3 (D)當x=-2時,y有最小值-3
問題詳情
15.關於二次函數y=-4(x-2)2-3的敘述,下列何者正確?
(A)當x=2時,y有最大值-3
(B)當x=2時,y有最小值-3
(C)當x=-2時,y有最大值-3
(D)當x=-2時,y有最小值-3
參考答案
答案:A
難度:
計算中
-1
書單:
沒有書單,新增
用户評論
【
svice30
】評論
因為二次項係數為-4故開口朝下,所以........
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