设不等式
的解集为M,
.
(1)证明:
;
(2)若函数
,关于x的不等式
恒成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8e629ba04180e6c8041a8c2725e2f10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a2b85186925658e66d8541a5645269e.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7cb970715ba0239eae31b19b9874373.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffb3e512a4eb1ddfdec49d7181c55caa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c40cf5ab800b6c8ef114e5ea39cfab36.png)
更新时间:2020-07-11 07:06:06
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(2)记函数
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适中
(0.65)
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【推荐2】已知函数
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4ebfef550eec07598671c5929259780.png)
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(2)若函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/624461bef21a0afc8417de01779053d9.png)
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(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
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【推荐1】已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21641257011951ff2b52df80d332ce8d.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c25be6393461401c6b375358d39a71e.png)
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【推荐1】已知不等式
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e0b1c30ee0bd18d64a328edd51ce744.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
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您最近一年使用:0次
解答题-问答题
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适中
(0.65)
解题方法
【推荐2】已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da9a6c51bf44644108756ab31e9d2515.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
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(2)若对于任意的
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