問題詳情
6)设abc＞0，二次函数f(x)=ax2+bx+c的图象可能是
(A)
(B)
(C)
(D)
(A)
(B)
(C)
(D)
參考答案
答案：D
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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