問題詳情
14.已知二次函數f(x)=ax2+bx+c之圖形如下,則(bc,b2-4ac)屬於第幾象限?
(A)一
(B)二
(C)三
(D)四
參考答案
答案：C
難度：計算中-1
書單：沒有書單，新增
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