1 . 二次函数
(a,b,c是常数,且
)的自变量x与函数值y的部分对应值如下表:
且当
时,对应的函数值
.下列说法不正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
x | … | 0 | 1 | 2 | … | |
y | … | m | 2 | 2 | n | … |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d599059e6b2c918ab15ee22611b6962.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a57458464618fcf619375a93d3c66d69.png)
A.![]() |
B.![]() |
C.关于x的方程![]() ![]() |
D.![]() ![]() ![]() ![]() |
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