名校
1 . 设函数
.
(1)求函数
的值域;
(2)设函数
,若对
,求正实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21a62dfad6df2e750b3c451092826a57.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b8fc940e8bbf916f85e0a6e457bfb70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85403417cd458ccc60d1ed4fa2afdd06.png)
您最近一年使用:0次
2021-12-15更新
|
1038次组卷
|
3卷引用:新疆昌吉教育体系2022届高三上学期第三次模考数学(理)试题
2 . 已知函数
.
(1)当
时,求函数
的定义域;
(2)若关于x的不等式
的解集为
,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3d1d65b3102d13809bca1c83a8af8c2.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4c355f11471a38f5583a434a1ddeb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)若关于x的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73808266e0ab78996165a30a39f6c11f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
您最近一年使用:0次
2021-01-09更新
|
233次组卷
|
3卷引用:新疆2021届高三年级第一次联考数学(理)试题
3 . 已知数列
是公比为2的等比数列,且
,
,
成等差数列.
(Ⅰ)求数列
的通项公式;
(Ⅱ)记
,
是数列
的前
项和,若
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb5ca241bb7c313ef0366d3ddba93bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/439ab6efef79a10a6b8e320fab696225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d199f9235e3bd36bfa78c3772e941896.png)
(Ⅰ)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
(Ⅱ)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ceea49bb304d454dacb29ffd6f77c4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb26cd1601fe7e76e1e2dc0b4909324a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bee4464b3b4eb6e52ee02f095aae84f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73dbd1ae5c1e04d8edde2158cfa1800e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次