已知函数
,且关于
的不等式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a9e93adab0cecc867a5d2edae5fdfcd.png)
的解集为
.
(1)求实数
的取值范围;
(2)求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecbd5a99b8b0db30474ef8981f5e037d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a9e93adab0cecc867a5d2edae5fdfcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7f7f094e09ee6c70253de52e17816c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77d73bcd16ffeafb65325d50dd24c04f.png)
更新时间:2016-12-04 05:23:52
|
【知识点】 绝对值不等式
相似题推荐
解答题-问答题
|
较易
(0.85)
解题方法
【推荐1】设全集
,解关于
的不等式:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a64dc61989ca50b9ee19d835c4ed268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84f8f0274c644b22c47986466f948741.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐2】已知函数f(x)=|x+1-2a|+|x-a2|,a∈R,g(x)=x2-2x-4+
.
(1)若f(2a2-1)>4|a-1|,求实数a的取值范围;
(2)若存在实数x,y,使f(x)+g(y)≤0,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69df9331b8994cdaf5793c457d6a49fc.png)
(1)若f(2a2-1)>4|a-1|,求实数a的取值范围;
(2)若存在实数x,y,使f(x)+g(y)≤0,求实数a的取值范围.
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐3】已知函数
.
(1)求不等式
的解集;
(2)若函数
的最小值为
,且实数
满足
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1bafda522863f8585b9255c17988d9d.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ef6f4cf539a232bc766768a9bc257b5.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5143019ec6eff9be94254af78b930516.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9b17fc60c2a3fecd4a2d723b5edaffa.png)
您最近一年使用:0次