选修4-5:不等式选讲
已知不等式
的解集为
.
(Ⅰ)求
的值;
(Ⅱ)若
,求
的取值范围.
已知不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e1e542ecddfe52d0fe8a9b1e88f5dd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08d417f1ebe337ac409009a71aeb446f.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2783a5cb58aeba7d796c94e291c4c3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0fde4f8aa8e36636dd397384a1fe8da.png)
更新时间:2016-12-04 18:20:48
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【知识点】 绝对值不等式
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】设函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e6257bb57877ae0a9291d8e2243c715.png)
(Ⅰ)若不等式
的解集是
,求实数
的值;
(Ⅱ)若
对一切
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e6257bb57877ae0a9291d8e2243c715.png)
(Ⅰ)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb55d76601bc0b44a2b22b77edf482f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe081d91e5d50930a2837693c261e0ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b15bd315b801f71bc30b8d772098614.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a246efd9c0f6b3a3da3edb223078d90b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05f1a3feca6218955446108ebad0a524.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
解题方法
【推荐2】设
.若不等式
,对任意实数
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d235c1b39b83168b130bd4724e53a27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e92001387b14df531799c47e64b301.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次