9-10高一下·辽宁·期末
1 . 已知关于
的一元二次不等式
对任意实数
都成立,试比较实数
的大小.
![](https://img.xkw.com/dksih/QBM/2015/8/27/1572224964763648/1572224970719232/STEM/0f5c0cec7c10493ca769a2de475ba87b.png)
![](https://img.xkw.com/dksih/QBM/2015/8/27/1572224964763648/1572224970719232/STEM/a2ecebe3dfb6455fb6be8ce57b29b048.png)
![](https://img.xkw.com/dksih/QBM/2015/8/27/1572224964763648/1572224970719232/STEM/0f5c0cec7c10493ca769a2de475ba87b.png)
![](https://img.xkw.com/dksih/QBM/2015/8/27/1572224964763648/1572224970719232/STEM/c9c734b12eca4afea1c0694563d76843.png)
您最近一年使用:0次
2 . 已知
,则
大小关系为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e4555b4f8546c96b490ac7529e0b84b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2016-12-04更新
|
228次组卷
|
2卷引用:2015-2016学年辽宁庄河市高级中学高一下期末数学理试卷
3 . 设a,b,c均为正数,且2a=
,
,
,则
![](https://img.xkw.com/dksih/QBM/2016/4/27/1572605640695808/1572605646553088/STEM/8c1076fab49e4e2db822ccd85694d48a.png)
![](https://img.xkw.com/dksih/QBM/2016/4/27/1572605640695808/1572605646553088/STEM/06bad22d04e54df19ee2674fba38061a.png)
![](https://img.xkw.com/dksih/QBM/2016/4/27/1572605640695808/1572605646553088/STEM/f8ff092395074440860fdfecff4318cd.png)
A.a<b<c | B.c<b<a | C.c<a<b | D.b<a<c |
您最近一年使用:0次
4 . 等比数列
的前n项和
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d737c1047a14cee12a6671383e244fa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6b981758450e9dcee6cfbe6c67c61f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
A.![]() | B.![]() | C.0 | D.![]() |
您最近一年使用:0次
10-11高一下·辽宁大连·期末
5 . 设
,对于数列
,令
为
中的最大值,称数列
为
的“递进上限数列”.例如数列
的递进上限数列为2,2,3,7,7.则下面命题中
①若数列
满足
,则数列
的递进上限数列必是常数列
②等差数列
的递进上限数列一定仍是等差数列
③等比数列
的递进上限数列一定仍是等比数列
正确命题的个数是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce46df308577ee53d43915a95315beb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5efaa252efb0632fd78485b7ae9d537e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/233427826eb2233641fc3a9805f6d206.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27dc758ae7e137fdcb123fa2921374d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a89d1f32c1605cfdb8e8855051b9f6ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d737c1047a14cee12a6671383e244fa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd731e5bd5b9dea6e03eb72caa0d774f.png)
①若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d737c1047a14cee12a6671383e244fa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/609941a503e01117578221b5fa187ef2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d737c1047a14cee12a6671383e244fa5.png)
②等差数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d737c1047a14cee12a6671383e244fa5.png)
③等比数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d737c1047a14cee12a6671383e244fa5.png)
正确命题的个数是
A.0 | B.1 | C.2 | D.3 |
您最近一年使用:0次
6 . 在
中,若
,
,则
的面积![](https://img.xkw.com/dksih/QBM/2015/10/23/1572263562174464/1572263567867904/STEM/c438d3ee2837401db71c80bbb29fd8ad.png?resizew=28)
__________ .
![](https://img.xkw.com/dksih/QBM/2015/10/23/1572263562174464/1572263567867904/STEM/d9fd637642864d28806dd24d9ce50ce4.png?resizew=45)
![](https://img.xkw.com/dksih/QBM/2015/10/23/1572263562174464/1572263567867904/STEM/b8ea3a298b2e4bb3bf83f1e8e4b80437.png?resizew=61)
![](https://img.xkw.com/dksih/QBM/2015/10/23/1572263562174464/1572263567867904/STEM/a427670545404401a96bc7f814bbfe5d.png?resizew=103)
![](https://img.xkw.com/dksih/QBM/2015/10/23/1572263562174464/1572263567867904/STEM/d9fd637642864d28806dd24d9ce50ce4.png?resizew=45)
![](https://img.xkw.com/dksih/QBM/2015/10/23/1572263562174464/1572263567867904/STEM/c438d3ee2837401db71c80bbb29fd8ad.png?resizew=28)
您最近一年使用:0次
7 . 已知
,
满足条件
,则
的最小值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://img.xkw.com/dksih/QBM/2015/10/23/1572263562174464/1572263567851520/STEM/4b7280d2163147e9934103ea48306a8a.png)
![](https://img.xkw.com/dksih/QBM/2015/10/23/1572263562174464/1572263567851520/STEM/4ee3729d95584b36929e67c6371f8a4f.png)
A.![]() | B.![]() | C.![]() | D.4 |
您最近一年使用:0次
8 . 若
满足约束条件
则
的最大值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c88bb69576945680769604f1a6eba948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/916bb2cc1b29574ff95b47567c59ee0c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
9 . 平面直角坐标系中,不等式组
(
为常数)表示的区域面积等于3,则
的值为
![](https://img.xkw.com/dksih/QBM/2016/9/6/1572999675469824/1572999681081344/STEM/abd637db5c98461d8b8efd1aec9d5edc.png)
![](https://img.xkw.com/dksih/QBM/2016/9/6/1572999675469824/1572999681081344/STEM/06c7dc0429594d5a8af24256eed1a985.png)
![](https://img.xkw.com/dksih/QBM/2016/9/6/1572999675469824/1572999681081344/STEM/06c7dc0429594d5a8af24256eed1a985.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次