問題詳情
20.已知某二次函數的頂點為(0,－7)，且通過(2 , 2)，求此二次函數為何？
(A) y＝ 
x2－
(B) y＝－ 
x2－
(C) y＝－ 
x2＋
(D) y＝ 
(x＋7)2
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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