已知函数
,
.
(1)证明:
有且仅有一个极小值点
,且
;
(2)若对任意
,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d42cd5920c27db7257886fece226833b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4031b540afcd3061f431b735a3c62bb6.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b91a0a580b2483bcd16f916611f81c3.png)
(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e0656eee2d8ee838aacfda24a00ad69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
21-22高二下·福建漳州·期末 查看更多[3]
更新时间:2022-07-11 19:49:31
|
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(1)当
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(2)若不等式
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(3)证明:当
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(1)若对定义域内任意非零实数
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(2)记
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较难
(0.4)
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的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e18852ef3b7e3eec1caa014dfeebf90.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f5b763032c085a1e60822d8dc1b3605.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
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