已知函数
.
(1)当
且
时,证明
.
(2)令
,若
时,
恒成立,求实数
的取值范围;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4ec0e6b181960a34ea7c5ce4828aa0.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a3647b91148807b82a000986cd1d501.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/959f019ced15fee01049607a897aae83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c2939aab753b2ea556a2612db24aa21.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e5809a8f29c3e0536443a0c868c4b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9529bc72d1b9e5d1eb1996785a0b8483.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe954f042563f585f0a910d2eaf038b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b331bbdd68d110681fc4547748b93bb.png)
更新时间:2018-06-18 22:05:36
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解答题-问答题
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较难
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【推荐1】已知函数
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(Ⅰ)当
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(Ⅱ)求函数
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(Ⅲ)试证明对任意的
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(Ⅰ)当
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(Ⅲ)试证明对任意的
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名校
解题方法
【推荐2】设函数
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(Ⅰ)求
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(Ⅱ)若
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(Ⅰ)求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304226ca50149b49702928e44d565964.png)
(Ⅱ)若
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(1)求
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(2)若函数
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(2)设
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57cfc5075b9b64b8190b5831f74a4f06.png)
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