名校
解题方法
1 . 已知椭圆
的左、右焦点分别是
,AB是椭圆C的任意两点,四边形
是平行四边形,且
,则椭圆C的离心率的最大值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6ef6f0e1585b02d72fa399ce262f915.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36efa209fe7d63ff23f4285465b173a0.png)
您最近一年使用:0次
2 . 已知椭圆
,
分别为它的左右焦点,A,B分别为它的左右顶点,点P是椭圆上的一个动点,下列结论中正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ee9ce51f55008258322bbe19810f62d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
A.存在P使得![]() | B.椭圆C的弦MN被点![]() ![]() |
C.![]() ![]() | D.直线PA与直线PB斜率乘积为定值![]() |
您最近一年使用:0次
2023-11-19更新
|
555次组卷
|
3卷引用:江西省南昌市江西师大附中2023-2024学年高二上学期期中数学试题
名校
解题方法
3 . 已知F是抛物线
的焦点,P为抛物线上的动点,且点A的坐标为
,则
的最小值是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac62b1ade07205ae2693ec1ab135def.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913f78382630e50543e5f7192cae3ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/768508b1a1b05f0d3e8cd4d2464344df.png)
您最近一年使用:0次
2023-11-19更新
|
697次组卷
|
5卷引用:江西省南昌市江西师大附中2023-2024学年高二上学期期中数学试题
江西省南昌市江西师大附中2023-2024学年高二上学期期中数学试题江西省丰城中学2023-2024学年高一上学期12月月考数学试题(已下线)3.3.1 抛物线及其标准方程(AB分层训练)-【冲刺满分】2023-2024学年高二数学重难点突破+分层训练同步精讲练(人教A版2019选择性必修第一册)(已下线)专题24 抛物线的标准方程4种常见考法归类 - 【考点通关】2023-2024学年高二数学高频考点与解题策略(人教B版2019选择性必修第一册)(已下线)通关练17 抛物线8考点精练(1)
名校
解题方法
4 . 已知双曲线
的左、右焦点分别为
,O为坐标原点,倾斜角为
的直线l过右焦点
且与双曲线的左支交于M点,若
,则双曲线的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a2cfa22139b3e9c9a73500e1ba19f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037fb348109dc2063a268b10eb925a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/376eb6f53c9917c184bd3e01e467395e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-11-19更新
|
572次组卷
|
2卷引用:江西省南昌市江西师大附中2023-2024学年高二上学期期中数学试题
名校
解题方法
5 . 设抛物线
:
(
),圆
:
.已知
上的点到
的准线的距离的最大值为8.
(1)求
;
(2)倾斜角为45°的直线
与
交于
,
两点,与
交于
,
两点.
(ⅰ)若
为圆
的直径,求
的面积;
(ⅱ)当
取最大值时,求直线
在
轴上的截距.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe6cdd424b3ef519fe9a1ac430d2d199.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
(2)倾斜角为45°的直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
(ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2135ff2675324de8a374aadca74e869f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
您最近一年使用:0次
名校
解题方法
6 . 轮船在海面上航行时,一般是通过发送电磁波信号实现定位.发送电磁波信号后,根据两个基站接收信号的时间差,便可以定位轮船在海面上大概的位置.建立平面直角坐标系
(单位:千米),
轴正半轴方向为正北方向,纵坐标小于0的部分为陆地,纵坐标大于0的部分为海面.已知两个基站的位置分别为
,
,一港口
位于基站
,
之间靠近
的位置.现有一艘轮船从港口
出发沿着直线航行一段时间后到达点
,并发出电磁波信号,两个基站接收到信号的时间差为
秒(不知道两个基站接收信号的先后顺序).已知电磁波在空气中的传播速度为
千米/秒.
(1)求点
的轨迹方程;
(2)已知在港口
发出电磁波信号后,两个基站接收到信号的时间差为
秒.若这艘轮船的航行方向是东偏北45°,求这艘轮船从港口
出发到海面上发送信号的这段时间航行的距离(结果保留整数,单位:千米).参考数据:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66bc80a50f53def529a70080690f474b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccb19936417d2c95e115258b94f420b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d82bca3416efa46efd347c6ca34a49d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a8028e01a02af3ba8a1e29986fb9671.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)已知在港口
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d82bca3416efa46efd347c6ca34a49d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52881be613aa404e553da30d8987cfad.png)
您最近一年使用:0次
名校
7 . 设
,双曲线
的离心率为
,椭圆
的离心率为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d33558881906c228c262ff8024dcfc4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a33a99190a8fd29c36d5a002e3197cc5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
8 . 一个工业凹槽的截面是一条抛物线的一部分,它的方程是
,在凹槽内放入一个清洁钢球(规则的球体),要求清洁钢球能擦净凹槽的最底部,则清洁钢球的最大半径为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/17/83d4c134-6996-4e65-a079-15aab4eeddc5.png?resizew=176)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7ce4bbc90bbb98352777a88edabfb7a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/17/83d4c134-6996-4e65-a079-15aab4eeddc5.png?resizew=176)
A.![]() | B.1 | C.2 | D.![]() |
您最近一年使用:0次
名校
解题方法
9 . 设抛物线:
(
)的焦点为
,若点
在
上,则
( )
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
10 . 已知双曲线
:
(
,
)的右焦点为
,
为坐标原点,以
为直径的圆
与
的渐近线交于
,
,
三点.记四边形
的面积为
,圆
的面积为
,则当
取最大值时,
的离心率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/cdefbd84550de6d5259b2d926e021224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235f0a6fb218d28383e6f27f2df1f50f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次