已知二次函数
的图象与x轴的两个交点分别是
和
,且抛物线还经过点(-4,y1)和(4,y2),则下列关于
、
的大小关系判断正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e59da5115d0dafea24822245f92c48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2a5e336b6bcba6354fd366c892dd06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88c3a2f5b0702ea9fbb9dc8904579737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2022-03-11 16:50:21
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【推荐1】若点
在抛物线
上,则h的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b6c841550037e162e907034d65064c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8757640e2fab7dbf868a14ff4e335cd7.png)
A.4 | B.3 | C.2 | D.1 |
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【推荐2】已知抛物线
经过
,
两点,则该抛物线的解析式为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8270619969a4c83a2bd3b6a990094d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d83b60dcb48a2be95cdd94621d1f6aa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/144da0a6808340a01279ec11a7f43675.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】如图,已知二次函数
的对称轴为直线
,图象与x轴交于
,B两点.下列结论的错误个数是( )
(1)
;(2)
;(3)
;(4)
;(5)
;(6)对于任意实数n,
总成立.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/30/fe0de149-8c12-411b-9993-439dae87926b.png?resizew=184)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc90b02a4cd1425aabfc192b1cdee17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d57173ef4cd72eb270686875dfd623.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77694c11ba40ec5c2fc4f6a05e31a048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da68ff94b0877adb96abbc3e0fa52d86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9cf9a0dafa396fd40a5947df5d0f0ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ecd26378e64710947ab7661fa86b12d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0932983ccb18873f11ff7078e19e9dad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59bb413d962d2a2550ef746d57bcd031.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/30/fe0de149-8c12-411b-9993-439dae87926b.png?resizew=184)
A.2 | B.3 | C.4 | D.5 |
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【推荐2】已知抛物线
经过点
,则下列结论错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/583272008b6cde70bd51660b2df15ceb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8156a557d9b963a77dfd88178789ac7.png)
A.抛物线的开口向上 |
B.抛物线关于直线![]() |
C.抛物线与坐标轴有两个交点 |
D.当![]() ![]() ![]() |
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