已知函数
,不等式
的解集是
.
(1)求
的解析式;
(2)若对于任意
,不等式
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bab93efd42a3054040ccff8adf697c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b6d39251c07d92914352c39669f976f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5850426712b921e7c18b9a9a43712cc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2131c82c03506c74ea3d50ca7f40ffe8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
更新时间:2020-12-27 11:18:50
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解答题-问答题
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【推荐2】设m为实数,函数
,分别根据以下条件求实数m的取值范围.
(1)方程
有实根;
(2)不等式
的解集为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/225f9225f38d211f73deef077227f447.png)
(1)方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2a7df955fc17e92fd86302f8c34664a.png)
(2)不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a837165ca03f9e4ea8964979c95e3bb.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
名校
解题方法
【推荐1】已知函数
.
(1)若
,求不等式
的解集;
(2)已知
,且
在
上恒成立,求
的取值范围;
(3)若关于
的方程
有两个不相等的实数根
,且
,
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92fc922202baa77221c584d9bf5fe32a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d08a12cd8b1fc1e1ab047147aad6d70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3047d4ab078dafc06c047bcbf0a6ffaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7ec808ad60dbf016632ec816eaca1df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b058f0a0ccb1440f02717234fda5664.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/943b9f27a28d2afedb110ebe5a99ae43.png)
您最近一年使用:0次
解答题-作图题
|
较易
(0.85)
名校
解题方法
【推荐2】给定函数
,
,
,用
表示
,
中的较大者,记为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/31/3e6b2e01-eddb-413d-96dc-7ada03633788.png?resizew=358)
(1)求函数
的解析式并画出其图象;
(2)对于任意的
,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a66062dbd4978a7bb2fb9b9aabb898af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b001f9b8ab4e69090a7da5589eb6a82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/531bcdb6324cb5a759301daddf9768c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316f701027f4bd38abca039b3499b498.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/31/3e6b2e01-eddb-413d-96dc-7ada03633788.png?resizew=358)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ad3b563ce7bb76f384ae5cdc1b787f9.png)
(2)对于任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f5d54ea50d01535318b10a9fa570931.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4f7e35383d0c06c45a1e12973c4db0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次