已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe225538ec4c5727feadf118b30c5351.png)
(1)当
时,求不等式
的解集;
(2)若对任意
,
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe225538ec4c5727feadf118b30c5351.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4509817be39bef4bcde115996ee39e8.png)
(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9322dd8f56b5f8d2c667fdf0d4a9f9aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bdbc5c6e970476b69d2a4cb1f20ea28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2022-12-21 16:08:42
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【推荐1】已知函数
,不等式
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(1)求
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(2)证明:当
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.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b719c0986e4c6bfe9254601e6754463c.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a2b85186925658e66d8541a5645269e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1dc821abeab2b6342a9a2364e0edcfd.png)
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【推荐2】选修4-5:不等式选讲
已知不等式的解集为M.
(I)若,求集合M;
(II)若,求实数
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【推荐1】设函数f(x)=|x﹣a|+3x,其中a>0.
(1)当a=1时,求不等式f(x)>3x+2的解集;
(2)若不等式f(x)≤0的解集为{x|x≤﹣1},求a的值.
(1)当a=1时,求不等式f(x)>3x+2的解集;
(2)若不等式f(x)≤0的解集为{x|x≤﹣1},求a的值.
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【推荐2】已知函数
.
(1)求不等式
的解集;
(2)设不等式
的解集为
,且
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f58d2c69a5574d66dac146acb1d08b5f.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f79498580728ff835d1c3355d85bbaa3.png)
(2)设不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3967fa85350c1ba0fc3ec9706c70dbca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c46d5e9fab7da051ecdb548db64eca8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐2】已知函数
.
(1)若
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(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4290fa25d328af0d62fdd18f4629867.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60cfce38208dcaa3c520b4b030fa73c8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8a33c8e64e3650140754b22a5596c6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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