名校
1 . 已知函数
,其中
,函数
在
上的零点为
,函数
.
(1)证明:
①
;
②函数
有两个零点;
(2)设
的两个零点为
,证明:
.
(参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7495c0f25cf04e5e59bb4ae43ffc4fa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c940cb46e4a6eae0b7172414c965b66f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c353f6bf5422164ef1496838ba1e6de0.png)
(1)证明:
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ffa38ec984cae2089a6061c5b231dc5.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca579894dad67bc82cb715fd48e0d70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05f127c78da4fd62e8e98f2262400bda.png)
(参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2995cf1665e01b853555e62aeaf0ac31.png)
您最近一年使用:0次
2022-12-16更新
|
1826次组卷
|
4卷引用:福建省漳州市第三中学2022-2023学年高二下学期期中数学试题