名校
解题方法
1 . 已知
,我们定义函数
表示不小于
的最小整数,例如:
,
.
(1)若
,求实数
的取值范围;
(2)求函数
的值域,并求满足
的实数
的取值范围;
(3)设
,
,若对于任意的
,都有
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8970b99038dfdc964e26f41a1949e968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91f75630540a77db49408d2c3e3b34be.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06a857be85405c5198bff2d92414a9b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec656fc93f73e7fc5971f7024612937c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd8e0e2c46e8e898749dc197d7e2e5a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10571c75b610d7506b9647cd06ddaf0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47e9521c64fdf0f72e6e7a39ab28d07d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be083b8f0bbaba3d676ef4a0f3df0222.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fa12545243d18e3a66f0c277ded319a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2023-09-28更新
|
507次组卷
|
3卷引用:上海市松江区华东政法大学附属松江高级中学2022-2023学年高一上学期期末数学试题
名校
2 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46ef91ea8f4d1a2439b77d9cba58b28a.png)
(1)若
,求函数
的值域;
(2)若关于
的方程
有解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46ef91ea8f4d1a2439b77d9cba58b28a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7f06b86f84d1a293d05c97e4460860a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2019-12-07更新
|
464次组卷
|
3卷引用:上海市松江二中2021届高三上学期10月月考数学试题
3 . 函数
的值域为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dfe7d5e0fe16a10571cc4a285154b00.png)
您最近一年使用:0次
4 . 若函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d13fd8e4ff7238caf033471cb8a9837.png)
没有最小值,则
的取值范围是____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d13fd8e4ff7238caf033471cb8a9837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb9785109455cbf8cbb673151ec78e88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次