已知函数
,
.
(1)求函数
的值域;
(2)已知对任意
,
,都有不等式
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba3cac51dd02874e8c19c2e081d1d80f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f58427d5aa7deeca47c8789241913f30.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)已知对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c16975ca95c79ba889f3aa1240fc0b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f58427d5aa7deeca47c8789241913f30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0fe70c8141cf9a4ea6016779e6a7798.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
20-21高一上·重庆渝中·阶段练习 查看更多[4]
重庆市巴蜀中学2020-2021学年高一上学期9月月考数学试题(已下线)专题1.3 全称量词与存在量词-2020-2021学年高二数学课时同步练(苏教版选修1-1)(已下线)专题1.3 全称量词与存在量词-2020-2021学年高二数学课时同步练(苏教版选修2-1)(已下线)1.4 全称量词与存在量词基础练-2021-2022学年高二数学同步训练精选新题汇编(人教A版选修2-1)
更新时间:2020-10-08 22:14:59
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相似题推荐
解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】求下列函数的值域:
(1)
;
(2)
;
(3)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/100fd3461a4efa35563dd4e58f3f35b9.png)
(4)
;
(5)
;
(6)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db6305d6e2b3022eb6c8b77c05b95e18.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d6e0a478b092a44066a44e29f4f7987.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/100fd3461a4efa35563dd4e58f3f35b9.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a3032146164ec191e37a2825b9e45ae.png)
(5)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d0253fb016fa983e553c94e6c18edd1.png)
(6)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dc70deea7b55eb57f3335f400dd47c0.png)
您最近一年使用:0次
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(0.65)
【推荐2】设
是同时符合以下性质的函数
组成的集合:
①
,都有
;②
在
上是减函数.
(1)判断函数
和
(
)是否属于集合
,并简要说明理由;
(2)把(1)中你认为是集合
中的一个函数记为
,若不等式
对任意的
总成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://img.xkw.com/dksih/QBM/2013/10/31/1571378725830656/1571378731679744/STEM/cf0927fba6124e52b7944bd7c8d8fefb.png)
①
![](https://img.xkw.com/dksih/QBM/2013/10/31/1571378725830656/1571378731679744/STEM/9082c81687ed4b8585828c5c35c33b8e.png)
![](https://img.xkw.com/dksih/QBM/2013/10/31/1571378725830656/1571378731679744/STEM/89b913123cc6442d84486b8c583a7f63.png)
![](https://img.xkw.com/dksih/QBM/2013/10/31/1571378725830656/1571378731679744/STEM/cf0927fba6124e52b7944bd7c8d8fefb.png)
![](https://img.xkw.com/dksih/QBM/2013/10/31/1571378725830656/1571378731679744/STEM/054e460e961b49338710af71eea78eb8.png)
(1)判断函数
![](https://img.xkw.com/dksih/QBM/2013/10/31/1571378725830656/1571378731679744/STEM/6e0738d2aced427fb334f1105e95ac82.png)
![](https://img.xkw.com/dksih/QBM/2013/10/31/1571378725830656/1571378731679744/STEM/f76b03b225e24da18a485aac5a51eb22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bec9ff3d82ba1c5f4bf4d217371ddee8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)把(1)中你认为是集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://img.xkw.com/dksih/QBM/2013/10/31/1571378725830656/1571378731679744/STEM/26de6fda3156426ca3c844c103d0ff35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/914f75ae65395c217c0d1231f8ac3704.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bec9ff3d82ba1c5f4bf4d217371ddee8.png)
![](https://img.xkw.com/dksih/QBM/2013/10/31/1571378725830656/1571378731679744/STEM/bf493569005d41ad920195bee4ab374f.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐1】设
,函数
,
,
.
(Ⅰ)若
为偶函数,求
的值;
(Ⅱ)当
时,若
,
在
上均单调递增,求
的取值范围;
(Ⅲ)设
,若对任意
,都有
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773ca22fc12ade9e60dbc749ba5cfa73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df4b992d0c120d6ac405423183b2342a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43e8c2e15115c2c464f2b60a12fe98f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94e7c300c2def88e87e2a8108655993c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7dcdd87d593df4a5c5e98d47fe1cfa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(Ⅲ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0436d7d6e61bb15a0be31bb903d2006e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/998485ffeb46a0412ff1a0f814429257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec6f2ac1f581a415cac5235661ed1981.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b17458c486f06d500677cb9427873ab7.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】(1)已知对任意
,函数
的值恒大于零,求
的取值范围.
(2)已知对任意
,函数
的值恒大于零,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1591d4244dcf5539a4ae98f554e91e61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b333615ea9e1cc049967cbd62ed53bf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)已知对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec25b9d7ca47b780a744c2ebbf31d925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b333615ea9e1cc049967cbd62ed53bf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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1】已知函数
(其中
,
为常数,且
)的图像经过点
.
(1)求函数
的解析式;
(2)若不等式
在区间
上恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e7040469206bedc7b68fcdfb0d68787.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/810949b76573ccd9d43af3815299d443.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83f2813b57a768e92340af0f4bd4e54.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fd4855aabe8052409163e43ddfb1393.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4c0c037867665979b6dc75fb995f9ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
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适中
(0.65)
名校
解题方法
【推荐2】已知函数
.
(1)求不等式
的解集;
(2)若关于
的不等式
在
上恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33e602451bf6c72f7d7d06be1716e1ef.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/665dc334a37e61c356b636604eb0f8c3.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5562b57fbbdd6338eb46ccbd4bb81458.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次