已知不等式
的解集为
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aba8ed674806219065403c67a1dde72d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0e2bd2cf8c6d33577926bf2f8b2f82a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
更新时间:2020-05-01 13:15:39
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【知识点】 求绝对值不等式中参数值或范围解读
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解答题-问答题
|
较易
(0.85)
解题方法
【推荐1】已知函数
.
(1)求不等式
的解集;
(2)若关于
的不等式
在
上有解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/580448e27a4159da8a733d3dfab08c4b.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efd78eaaea022ca802d231c741ac2779.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e058e3ec033d66087c5d13862f6174b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/353483865b8b536584c8a642157ba88f.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
|
较易
(0.85)
名校
【推荐2】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5281eb314ac1e5fac77aa77f18f130fa.png)
1
当
时,求不等式
的解集;
2
若关于x的不等式
有实数解,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5281eb314ac1e5fac77aa77f18f130fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5036e26e77152eb05955d2aceca93950.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3796b30fdd80b4bdc34ef90c338a01aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c9a86e539e52dda14dba678aacd00e9.png)
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