已知函数
,
.
(1)若不等式
对任意
恒成立,求a的取值范围;
(2)若函数
有两个极值点
,
,且
,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e67d87e04ce614b199dd257daae87641.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d752d8db8a05b3ec7312f6ac8b64a07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/737c165baced95d7095d9f918a9cc110.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af1dcdfce4e67213937b00a44b0c8412.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b916df8bdd03ba4a31c0b8470d13436.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc9d074a77427397dc8bfa29cec7b356.png)
更新时间:2021-01-19 21:47:56
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解题方法
【推荐1】已知函数
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(1)若
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(2)当
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【推荐2】已知函数
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(1)当
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(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8e75f547129d14ffb61324fb58492ea.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddbab0148a753d2c18c6b11db588d2a5.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36d7d784f32183055e036b36caf8a8d5.png)
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(注:
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