1 . 已知函数
的相邻两对称轴间的距离为
.
(1)求
的值;
(2)证明:
;
(3)令
,记方程
,
在
上的根从小到大依次为
,若
,试求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e77f63a3c2b816c48069b7f9d41bf90b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f5389990c3a0c5373f3bd9fb2454c9.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3d271717c0c070f181b1530471eb54c.png)
(3)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bb678d521d8fc4581a9337049572a60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2818807dce7e9ec5514de572c3cc644.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb1e3c42f6407aeb76c260e28203de2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8062b4ba95e7368930ad2c04503c181c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83590c4a7ea5636843dd4b60c67cb40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fdbbbc493a9224e5f1a2624c1e7a705.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
解题方法
2 . 已知二次函数
的图象以原点为顶点且过点
,函数
的图象过点
.
(1)求
的解析式;
(2)证明:当
时,函数
有三个零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c832f2474efe89961ef41e884da7660c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/889fdbe6b31fd5cd7a239a90525856a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74f8404c3e1ce6718166dc0287c2a4c1.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12b894738a0c1d7e580df8ad1161fe4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb69447b886768cb66ce7966d00e3b9d.png)
您最近一年使用:0次
2011·四川南充·一模
3 . 已知
.
(1)若
,求方程
的解;
(2)若关于x的方程
在(0,2)上有两个解
,求k的取值范围,并证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047d56fcf30e02f324ba94e4f586dcab.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e69866076dcff686a05e9e91e61e68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3047d4ab078dafc06c047bcbf0a6ffaf.png)
(2)若关于x的方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3047d4ab078dafc06c047bcbf0a6ffaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad80c4ba8c593c5edfb167ae4a5f50f5.png)
您最近一年使用:0次
2018-11-15更新
|
607次组卷
|
9卷引用:2011届四川省南充市高三适应性考试数学理卷
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