11-12高三上·河南许昌·期末
1 . .函数
是定义在R上恒不为0的函数,对任意
都有
,
若
,则数列
的前n项和Sn的取值范围是
![](https://img.xkw.com/dksih/QBM/2011/3/9/1570033655119872/1570033659658240/STEM/65102f2b523c4e9f84796f20c5b9f671.png)
![](https://img.xkw.com/dksih/QBM/2011/3/9/1570033655119872/1570033659658240/STEM/864ed1b181014b08bc9a3636ce452a7f.png)
![](https://img.xkw.com/dksih/QBM/2011/3/9/1570033655119872/1570033659658240/STEM/3be1910610e34b79b5030cdc508ecc74.png)
若
![](https://img.xkw.com/dksih/QBM/2011/3/9/1570033655119872/1570033659658240/STEM/7615fc017fa84f1baf5b3fd53e94ff92.png)
![](https://img.xkw.com/dksih/QBM/2011/3/9/1570033655119872/1570033659658240/STEM/c27d7cd0c84041e6b17683299de29c99.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
2 . 已知
,则函数
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1c4e8f9191c8d2a7d9642dee4005361.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a97fc0a20640c93960cda1db085c49.png)
A.3 | B.6 | C.13 | D.22 |
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2016-11-30更新
|
844次组卷
|
6卷引用:2011年辽宁省瓦房店市五校高二上学期竞赛数学理卷
9-10高二下·广东潮州·期中
3 . 已知
,函数
.
(1)若函数
在区间
内是减函数,求实数
的取值范围;
(2)求函数
在区间
上的最小值
;
(3)对(2)中的
,若关于
的方程
有两个不相等的实数解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c314267dc3afe0632756a47ac5f1c4e7.png)
(1)若函数
![](https://img.xkw.com/dksih/QBM/2010/7/16/1569791762767872/1569791768461312/STEM/14c36ea4aaa3444b8024b038d99de44c.png?resizew=35)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64fcec77177443519207ffc6afb988d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c1756b564bf1d998d8179637011c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a90170d7ef5ff6d1d63517c166f7a9.png)
(3)对(2)中的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a90170d7ef5ff6d1d63517c166f7a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5920533acc1467caaccd2be000ddeab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2013·广东·一模
4 . 设三位数
,若以
为三条边的长可以构成一个等腰(含等边)三角形,则这样的三位数
有( )
![](https://img.xkw.com/dksih/QBM/2013/9/11/1571352008531968/1571352014094336/STEM/d44adf47ef84430ea21cbae3cf4fe7c3.png)
![](https://img.xkw.com/dksih/QBM/2013/9/11/1571352008531968/1571352014094336/STEM/88f64e92389d407e93c413734cda7a53.png)
![](https://img.xkw.com/dksih/QBM/2013/9/11/1571352008531968/1571352014094336/STEM/102b0f0071944b15be4992edbac8e4fa.png)
A.45个 | B.81个 | C.165个 | D.216个 |
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5 . 若
两点分别在圆
和
上运动,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdb1a11c68336fea3f5ef9615eb7c78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f733dd25d4c06eba47348cd8b94dc5b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
A.13 | B.19 | C.32 | D.38. |
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6 . 已知二次函数
,当
依次取
时,其图象在
轴上所截得的线段的长度的总和为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bb8e050f34dede4b1e0db50c964c9eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff0f774d203f8a7533241091bceb37d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.1 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2011-03-09更新
|
560次组卷
|
2卷引用:2011年辽宁省瓦房店市五校高二上学期竞赛数学文卷
7 . 若
为奇函数,且在
为增函数,则
的一个值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f84d64078481a231d5f68ffa28f2be4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de694144e7993d8a34e6c5d98664d031.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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