名校
解题方法
1 . 已知椭圆C:
(
,
)的长轴为
,短轴长为4.
(1)求椭圆C的标准方程;
(2)设直线l:
与椭圆C交于不同两点A、B,且
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41322821ce31416fdac8dd6e0aa41c71.png)
(1)求椭圆C的标准方程;
(2)设直线l:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54479885d4ab2f717d2e97718da04b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83f423f4c2973942ab64731bc81c40bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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2024-03-31更新
|
1665次组卷
|
2卷引用:四川省凉山州民族中学2023-2024学年高二下学期3月月考数学试题
名校
解题方法
2 . 在正四棱柱
中,
,点
在线段
上,且
,点
为
中点.
到直线
的距离;
(2)求证:
面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95196d4658088f565e495c005cfed5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/457f98ffd408dc7aeef865072df168d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d26d8a9d64ad3c8cba28840b41ed7837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
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2024-03-07更新
|
635次组卷
|
3卷引用:四川省凉山州民族中学2023-2024学年高二下学期3月月考数学试题
名校
解题方法
3 . 椭圆
的左、右顶点分别是
,椭圆的左焦点和中心分别是
,
已知
是
,
的等比中项,则此椭圆的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8672db5688d9cd4e690da0364146b849.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a371f394e6f942418fe80b52e24a90ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61f20a5abdb5deef164c7d633c2c8fce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a052a4645628e5ba018f5e2f17c1138.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-03-07更新
|
630次组卷
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3卷引用:四川省成都市第四十九中学校2023-2024学年高二下学期3月月考数学试题
名校
4 . 设
,向量
,
,
,则“
”是“
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1aedc1c8a16e306bcd6e5154f9ed6dfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de59c5a3239777e9763a7249f40356ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9690262fc8e080220bcfd606b54e4d85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7de86fd6be88f8b0a7f253f6233070fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b23cc1e2140104001dd399ace17e9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dced91de1b8c38aa95ffee0e5dc202.png)
A.充分不必要条件 | B.必要不充分条件 | C.充要条件 | D.既不充分也不必要条件 |
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2024-03-07更新
|
1394次组卷
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5卷引用:四川省绵阳市三台中学校2024届高三下学期三诊模拟考试(第三学月月考)文科数学试题
5 . 向量
在向量
上的投影向量为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bc44c2c100d504f3bd2b71db08dc412.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87bf2020d0ef698c58a5ad3c700cf53.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
6 . 已知向量
,
,
,若
,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/249a3b88b4ef6ad322ac02e4ff9908f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb5560936ed91ac9b6c0084ef0958ab8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43ceb3fb77c525a74ec9cf5af85d0f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a78026507d272b66ba3862dd401ad098.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
您最近一年使用:0次
7 . 已知空间向量
,
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc520546f7ed36f3dc300e86b5d8b8e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c523981007c9d71ced41ea30db8b76fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd16fdd1cad5cd58b57e79a553aae115.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/934d37c81b2266c7b86bcc11afaf5f91.png)
A.2 | B.-2 | C.0 | D.4 |
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名校
解题方法
8 . 已知抛物线
的焦点为
,在
上有一点
满足
,则点
到
轴的距离为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b871eae04a8d29a655fdf9a23f77e58b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3970c867134cdbfacdd89e79f229165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
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2024-02-23更新
|
230次组卷
|
3卷引用:四川省达州外国语学校2023-2024学年高二下学期3月月考数学试题
四川省达州外国语学校2023-2024学年高二下学期3月月考数学试题上海市华东师范大学第二附属中学2023-2024学年高二上学期期末考试数学试卷(已下线)专题04 圆锥曲线(六大题型+优选提升题)-【好题汇编】备战2023-2024学年高二数学下学期期末真题分类汇编(沪教版2020选择性必修,上海专用)
9 . 在平行六面体
中,
,若
,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20311b93fc6dcd120dac7486ca989025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f3adc4ed291596abf3bb93ae7a075d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e984585ddf28c039219afcebf229de7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8780f5b68f8907a57c1c2f96233a78c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf657dea768298b1996b7553d570dd0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/f79317fa-a337-473d-893a-35224ca7ea85.png?resizew=150)
A.![]() | B.![]() |
C.![]() | D.![]() |
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10 . 下列关于空间向量的命题中,正确的有( )
A.将空间所有的单位向量平移到一个起点,则它们的终点构成一个球面 |
B.若非零向量![]() ![]() ![]() ![]() ![]() ![]() |
C.与一个平面的法向量共线的非零向量都是该平面的法向量 |
D.若![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
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