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1 . 已知函数
.
(1)求函数的定义域;
(2)若
,求
的值;
(3)求证:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ba7ded1c94e54e4da8e97c32e5c8dc7.png)
(1)求函数的定义域;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af0ec6abbf9597d9292ca60197d9f405.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76acc9d0f0f0f6befbb9d9a64c497d2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db48ca9fe7c14d17493fa4a4333aa273.png)
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2018-02-09更新
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614次组卷
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3卷引用:四川省广安市武胜烈面中学2019-2020学年高一上学期期中数学试题