名校
解题方法
1 . 已知数列
为等差数列,前
项和为
,
是首项为2的等比数列,且公比大于0,
,
,
.则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/696d0e6b9013d2e5fdf3feb280c58e18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ff86be56090d576aad0c0945a6bd2bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbaed111f759d66a140168905f2026b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fb0344eb6d3543a6c80803e85f60b26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
您最近一年使用:0次
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2 . 若椭圆
的一个焦点与抛物线
的焦点重合,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efd066df597b2f3f2e86bd1df46c3a17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9278ebd294ff78bb178c0052ea92b159.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
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名校
解题方法
3 . 已知
,
,
,则
的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b8fbc5a85be94fe21de72026c56e3d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77dfc91f8366f0bd3129f3aed6c1b735.png)
A.2 | B.![]() | C.4 | D.![]() |
您最近一年使用:0次
2023-01-10更新
|
745次组卷
|
4卷引用:天津市宁河区芦台第一中学2019-2020学年高二上学期12月月考数学试题
天津市宁河区芦台第一中学2019-2020学年高二上学期12月月考数学试题河南省开封市通许县扬坤高级中学2022-2023学年高一上学期期末数学试题(已下线)模拟检测卷01(文科)(已下线)专题六 不等式-1
名校
4 . 椭圆
焦点在
轴上,以椭圆
的焦点和短轴端点为顶点的四边形恰好是边长等于4的正方形,则椭圆C的标准方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 已知以
,
为焦点的椭圆与直线
有且仅有一个公共点,则椭圆的长轴长是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9bece414af7ecb2d796dc8a6f549e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27e62a44b8712ce4483b8710cda0dc1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23fc11a3a7592c68b20f93bdde2ed3f.png)
A.![]() | B.2 | C.![]() | D.![]() |
您最近一年使用:0次
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解题方法
6 . 如图,四棱柱
中,各棱长均为
,
,
,则对角线
的长度为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/22/a45fba4b-e992-44b4-9cc5-20ff6b0f8ac4.png?resizew=155)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c800b6aabdc453e2c7e343061e9c6a78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39fdd41f2dce43e9f022811dc9958009.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/22/a45fba4b-e992-44b4-9cc5-20ff6b0f8ac4.png?resizew=155)
A.![]() | B.2 | C.![]() | D.![]() |
您最近一年使用:0次
2023-01-10更新
|
245次组卷
|
2卷引用:天津市宁河区芦台第一中学2019-2020学年高二上学期12月月考数学试题
名校
解题方法
7 . 已知
,
为椭圆
的左右焦点,点
在椭圆
上,
轴,
为短轴长的![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
(1)求椭圆
的离心率;
(2)若直线
与椭圆
交于两点
、
,且
,求椭圆
的方程;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0803835d6f594a60bd16c823e3ad2cd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96fa27f8db6167d4802a510371077bb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feb31826e94cde6199ed7f93139f3e17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c0b06dc01c30d13f64be2ac6a1d811e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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解题方法
8 . 若命题“
”为假命题,则实数
的取值范围___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf7e759fb1b90d765499278d86ce60f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2023-01-10更新
|
369次组卷
|
2卷引用:天津市宁河区芦台第一中学2019-2020学年高二上学期12月月考数学试题
名校
解题方法
9 . 椭圆
与双曲线
有相同的焦点
,
,若曲线
,
有一个公共点
,则
的面积为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5848d5cf43a63bab28ccc1721b642323.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b00d49e2e7aa773dc1a796094c1dbb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
您最近一年使用:0次
2023-01-10更新
|
384次组卷
|
2卷引用:天津市宁河区芦台第一中学2019-2020学年高二上学期12月月考数学试题