题型:单选题
难度:0.85
引用次数:357
题号:13282371
已知二次函数y=ax2+bx+c(a>0)与x轴正半轴交于A(p,0)和B(q,0)两点(点A在点B的左边),方程x=ax2+bx+c(a>0)的解为x=m或x=n(m<n),则p,q,m,n的大小关系可能是( )
A.p<q<m<n | B.m<n<p<q | C.m<p<q<n | D.p<m<n<q |
更新时间:2021-06-06 13:14:58
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【知识点】 抛物线与x轴的交点问题解读
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单选题
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较易
(0.85)
【推荐1】已知二次函数
(
,
,
为常数,
)的部分图象如图所示,对称轴为直线
,且与x轴的一个交点在点
和
之间.下列四个结论:①
;②若点
、
在此抛物线上,则
;③
;④对于任意实数m,总有
.其中正确的结论的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2a5e336b6bcba6354fd366c892dd06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b2c84e7b41a841a230ed5f8a42309aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77694c11ba40ec5c2fc4f6a05e31a048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f741867a209a498c44c7701b12b94640.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79e96af8aa3c81271651dad02b09e5c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f99df1a7b58018125b99578b779342.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/313486bc5244bf52f2ae8a7a7db9af26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e54d15b35d41cbf25d6830c5f2a79884.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/27/af5be9dd-2fcb-459a-8a6f-17cf914a4fd1.png?resizew=186)
A.1个 | B.2个 | C.3个 | D.4个 |
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