已知不等式
的解集是M.
(1)若
,求实数a的取值范围;
(2)若
,求不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d2852bf973a81138a19c29b9ee60003.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fefe237385a2dc1b005d8dc61ef56eb.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffc1677771eff58e0155b27a3304a74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74a1320b2bb81bc55006b5f072b7e60e.png)
更新时间:2021-01-27 18:50:36
|
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解答题-问答题
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解题方法
【推荐1】已知函数
.
(1)当
时,求不等式
的解集;
(2)若对任意的
,不等式
恒成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27145091523fc17def346f0e03fdd35d.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b624d88827e92e12bc0a8f1067cbe72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/336897d60b15cb051c2c11bf1208bc2e.png)
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解答题-问答题
|
较易
(0.85)
【推荐2】已知二次函数
.
(1)若函数
的图象与直线
相交于A,B两点,其中A点的横坐标为1,B点的横坐标为5,求m的值;
(2)求不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c4385bb433dac3ac43a993cac462eff.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c4385bb433dac3ac43a993cac462eff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/254d0e3be93b3a32e45f3cd1f8c44891.png)
(2)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53adb74c1d8f48140887dcb2a5e4d4a3.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
解题方法
【推荐1】已知关于
的不等式
的解集是
或![](https://staticzujuan.xkw.com/quesimg/Upload/formula/127833081b789046260d6627a237e8bb.png)
(1)求不等式
的解集;
(2)已知
,
实数
满足
,若
是
的必要条件,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f84617aaab200384efeaec9a4fe71772.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9dc49b82360abf221de250ab4e29513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/127833081b789046260d6627a237e8bb.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a611e471b9c95621cea7cb6df44d2be9.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f9cdb92b93632808f262386d55d6f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8ebdfee5993414e88135ae23079250a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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解答题-问答题
|
较易
(0.85)
名校
解题方法
【推荐2】已知关于
的不等式
.
(1)若不等式的解集是
或
,求
的值;
(2)若不等式的解集是
,求
的值:
(3)若不等式的解集是
,求
的取值范围;
(4)若不等式的解集是
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeb05ac5a5b5a8aaae82101b67e6c89b.png)
(1)若不等式的解集是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f32b03bf99432a4e436d31fdd636d424.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eadce80640b6ddb25e64794544c87f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若不等式的解集是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78ebf9be00e385aa250498f59ff992c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)若不等式的解集是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(4)若不等式的解集是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a837165ca03f9e4ea8964979c95e3bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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