1 . 已知
,
是椭圆
的两个焦点,
是椭圆上在第一象限内的点,若
的面积为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bc9c2ee7fbe10e9392492c68138c739.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/c82e7d9f4f7ace849e09e9adcb786b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/002ed1ebb2cb936e10ab478789f91c7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bc9c2ee7fbe10e9392492c68138c739.png)
您最近一年使用:0次
2 . 已知在平面直角坐标系
中的一个椭圆,它的中心在原点,左焦点为
,上顶点为
,设点
.
(1)若
是椭圆上的动点,求线段
中点
的轨迹方程;
(2)过原点
的直线交椭圆于点
、
,若
的面积为
,求直线
的斜率
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46542271c7fa06f33b222424838c9684.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bdfbae913ff7ff8caaefcaacf8c20ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b3121286332a886070029e070fea0e4.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)过原点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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名校
3 . 已知
,
(
,
,
为两两互相垂直的单位向量),若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6efa575c9bfe6a4a42d4733c0eeac8ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc2ee06b14cb7da0de17e4e084d42bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bf2a896afb91ca06b513acd1a73bb83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/821a7c2e810ef18a2ee78f3722f03c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecc67f3d40b7871f0c702a85b313c15b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dced91de1b8c38aa95ffee0e5dc202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-01-07更新
|
838次组卷
|
3卷引用:甘肃省徽县第一中学2021-2022学年高二上学期期末数学(理)试题
甘肃省徽县第一中学2021-2022学年高二上学期期末数学(理)试题(已下线)模块一 专题1 空间向量的基本运算 期末终极研习室(2023-2024学年第一学期)高二人教A版四川省绵阳市南山中学实验学校2023-2024学年高二上学期期末模拟数学试题(六)
4 . 已知抛物线
(
)与倾斜角为45°的一直线
相切于点
,则该抛物线的焦点坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071d4c1556de22088445f191a80b8a25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35603111ec97b0b331c249633a6664e4.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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5 . 不等式
对任意实数
恒成立,则实数
的最大值与最小值之和为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb441451881e525eb1953f6034990e91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.3 | B.![]() | C.2 | D.![]() |
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6 . 下列命题中的假命题是( )
A.存在![]() ![]() | B.存在![]() ![]() |
C.任意![]() ![]() | D.任意![]() ![]() |
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解题方法
7 . 两个正数
、
的等差中项是
,等比中项是
,且
,则椭圆
的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec85f29c0860b57a8f0cf8098c13a97e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-12-13更新
|
1219次组卷
|
6卷引用:甘肃省徽县第一中学2021-2022学年高二上学期期末数学(理)试题
甘肃省徽县第一中学2021-2022学年高二上学期期末数学(理)试题(已下线)模块三 专题1 小题入门夯实练(3) 期末终极研习室(高二人教A版)宁夏回族自治区2023-2024学年高二上学期期末测试数学训练卷(二)(范围:选择性必修第一册 第三章+选择性必修第二册 第四章)(已下线)模块二 专题6 离心率的求解和范围问题 期末终极研习室高二人教A版(已下线)专题14 椭圆的离心率求算问题(期末选择题14)2023-2024学年高二数学上学期期末题型秒杀技巧及专项练习(人教A版2019)(已下线)专题07 等比数列及其前n项和6种常见考法归类(3)
名校
8 . 在
中,
,
,
分别是角
,
,
的对边,
的面积为
,
,
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa1466856bf2570685d3629c1f813748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a0d83444a29f1618ed79ad89c1dbae9.png)
A.4 | B.3 | C.2 | D.1 |
您最近一年使用:0次
2023-12-13更新
|
1434次组卷
|
10卷引用:甘肃省徽县第一中学2021-2022学年高二上学期期末数学(理)试题
甘肃省徽县第一中学2021-2022学年高二上学期期末数学(理)试题6.4.3.2正弦定理练习(已下线)专题04 平面向量的应用 (2)-【寒假自学课】(人教A版2019)(已下线)第11章:解三角形章末检测卷-【寒假自学课】(苏教版2019)(已下线)第06讲 解三角形-《知识解读·题型专练》(人教A版2019必修第二册)(已下线)11.2 正弦定理-【帮课堂】(苏教版2019必修第二册)(已下线)6.4.3余弦定理、正弦定理(第2课时)湖南省株洲市第十三中学2023-2024学年高一下学期3月月考数学试卷(已下线)专题04解三角形的7种常考题型归类-《期末真题分类汇编》(北师大版(2019))山东省泰安市泰山中学2023-2024学年高一下学期3月月考数学试题
解题方法
9 . 已知双曲线
的中心在原点,焦点
,
在坐标轴上,离心率为
,且过点
.
(1)求双曲线
的方程;
(2)已知抛物线
:
(
)的焦点到
的渐近线的距离为
,
上一点
到其焦点的距离等于3,求点
的横坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.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/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7fe90d9d33d16d255156bc6ef3aad80.png)
(1)求双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)已知抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc58c62444bf42a25289c45425a00f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abd313d4e92a762fb7fb0c1cb65263d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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10 . 已知关于的不等式
的解集为
.
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)求不等式组
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03f8b267ce6de685716a017509262053.png)
您最近一年使用:0次
2023-12-13更新
|
65次组卷
|
2卷引用:甘肃省徽县第一中学2021-2022学年高二上学期期末数学(理)试题