問題詳情
8.已知 
，請判斷下列哪些敘述是正確的？
甲：y = f(x)的函數圖形為拋物線
乙：在x = −1時 f(x)有最小值−4
丙：在x= −1時f(x)有最小值−2
丁： f(x)= 0有相異的兩根1和−3
戊：y = f(x)的函數圖形與x軸相交於(−1, −4)
(A) 只有甲、乙、丁正確
(B) 只有甲、乙、戊正確
(C) 只有甲、丙、丁正確
(D) 只有甲、丙、戊正確
參考答案
無參考答案
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