已知抛物线
的图像过点
,
.
(1)请用含b的关系式表示a;
(2)当
时,
.
①求b的取值范围;
②若点
,
在抛物线
的图像上,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe6337d68cd5653767e3a1889b8b2e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b334e2eaa7e8fb79cef8208b56ee4f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
(1)请用含b的关系式表示a;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c3d2ff5ee566fcc1b69c65712a661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eec336faee8689281a6f6b465e7fcff9.png)
①求b的取值范围;
②若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a1b2bf0143b4710a39f2d40a7a5f89d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9373d9d6a8cc0074c8a119204f411de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe6337d68cd5653767e3a1889b8b2e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca83fc9bb17fe3cf561d4c8d43c2b52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e1113e9b568fb9ca3286582368e257a.png)
更新时间:2023-05-22 15:30:44
|
【知识点】 y=ax²+bx+c的图象与性质解读
相似题推荐
解答题-问答题
|
适中
(0.65)
名校
【推荐1】已知二次函数
的图像经过点
(1,0).
(1)当
,
时,求二次函数的解析式及二次函数最小值;
(2)二次函数的图像经过点
(
,
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(
,
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都不小于
,求此时二次函数的解析式.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b724e955f78d88ce2ffce1e1ffb8a3ae.png)
(2)二次函数的图像经过点
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a254aa648fc465c6723fd1015a028361.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】一次函数
与二次函数
的图象交于
和
两点,且当
时,二次函数取得最大值.
(1)求这个二次函数的表达式;
(2)当
时,二次函数y的取值范围是 ;
(3)当自变量x的取值范围是 时,一次函数的值大于二次函数的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76d3830397b665dcedbb3b77a4ba956e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aabc8155a89862a8c72114670ef62fa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90c60b69e0c148d1e7ee1a13458e3b7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
(1)求这个二次函数的表达式;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2da45e190edb2230c9b6495647954d1c.png)
(3)当自变量x的取值范围是 时,一次函数的值大于二次函数的值.
您最近一年使用:0次