已知函数
,
.
(1)当
时,解不等式
;
(2)若
对任意
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95db7b1d55f6ab50b942453467e8a75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/709db55f0b99a5023eda64def7d72ea2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63b360782ba8ffd593d75087942f4449.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0eac2b31a19918895e5af2d316490e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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更新时间:2024-01-02 12:01:56
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适中
(0.65)
【推荐1】已知不等式
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17f9849615359e0d43a363c88c537e6a.png)
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适中
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【推荐2】设不等式
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63fa77415962b1aa6c535a3bf1b2ad6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/504ab226ad99488e8217ad40c19501dd.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60614303aa454c3d597dd2398a1f33c0.png)
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【推荐1】选修4-5:不等式选讲
已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cfaa9e73ac63fc881edd08ebb9b781b.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
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(2)
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适中
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【推荐2】选修4-5: 不等式选讲
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![](https://img.xkw.com/dksih/QBM/2015/3/26/1572035386146816/1572035392356352/STEM/726397e9424e4fb4af00e6916460f209.png)
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![](https://img.xkw.com/dksih/QBM/2015/3/26/1572035386146816/1572035392356352/STEM/a36473b6bf54486a9480ac53914788dd.png)
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![](https://img.xkw.com/dksih/QBM/2015/3/26/1572035386146816/1572035392356352/STEM/a81d5d1d32cc4069a020106128c11f7a.png)
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