设函数
.
(1)若不等式
的解集是
,求不等式
的解集;
(2)若
,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d772b117cbbb741ace7e0450086fb383.png)
(1)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b666663ce3537a634a3b427b418eb62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dc327d7d521aef1ffdf9cfe036ba7f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16aec455716dfb58e0704144d5458d7e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a8f3b454f067a043299ae015332465e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2021-10-27 09:04:20
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【推荐1】已知集合
,
,
,全集
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(1)求
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(2)如果
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd85948fcfae2a7fdfd3a77ede66c80.png)
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(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b109e426e848c161a79366657ca264dc.png)
(2)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f569c191a60a39899b5056aaa74b9f5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐2】求下列不等式的解集.
(1)
; (2)
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(3)
; (4)
;
(5)
; (6)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46851f8bd20af264c98d581825fd1afd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ea2cffed1bfef487bbdd6a1e468489d.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a9a0af3de084c7b69cff101adee4ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/595df5ae89ccfca0069a5380e9af7a2a.png)
(5)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b9c6bfc790b30a2dbcb1c6f02139e4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55354f67cad085411215b5c59998735a.png)
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名校
【推荐1】已知
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(1)求实数
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(2)求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f26f48a4a5a6cdfacfcf93c71dcc6525.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eba3a87f92545159c917143b12be8eb.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39b43399ed3139aa5338d4ad17aac464.png)
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解题方法
【推荐2】已知关于
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff41b6731acf36dd970c70eba3bd7612.png)
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(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)若正实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3fb763b3e307e8eb55afa3ae3183eb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/453f7331397798d54181456bf578a546.png)
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名校
【推荐1】给定两个命题,
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/569675dd7b2aca2732324f4bea5c02e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d7c82de9872984d55d49b5471a813d3.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed96a4869723b318e458de59d80342e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐2】已知不等式
.
(1)若不等式对于任意实数
恒成立,求实数
的取值范围;
(2)若存在实数
使得该不等式成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b54df5adb417f71c0187882ff9c70e0d.png)
(1)若不等式对于任意实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5a350074a95e2e3b3756c9ae279093.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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