已知抛物线y=ax2+bx+c的开口向下,顶点坐标为（2，-3）,那么该抛物线有（）_刷题宝

题干

已知抛物线y=ax²+bx+c的开口向下,顶点坐标为（2，-3）,那么该抛物线有（）

A：最小值-3

B：最大值-3

C：最小值2

D：最大值2

上一题下一题 0.0难度选择题更新时间:2019-11-11 10:23:00

答案(点此获取答案解析）

B

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