1 . 双曲线
:
的左右焦点分别为
,
,一条渐近线方程为
,若点
在双曲线
上,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8b0a5f6d439f73bade7dafc70b24988.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/5dc261508f42e75323971f0b8282b0ab.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/e27ad0481b4eba360acafcc03919d4a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c5ecc35b2ad878d62f4c4210023de15.png)
A.7 | B.9 | C.1或9 | D.3或7 |
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解题方法
2 . 已知抛物线
的焦点为F,直线l过点F且与C交于M,N两点,若
,则
的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c1ba86ffc6e5542b62319848c14acaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3ffa698693ea6aa3475e33e165322d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
A.![]() | B.![]() | C.5 | D.10 |
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3 . 如图,在三棱锥
中,
,
平面
,
,
的面积分别为2,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/28/307ea1d6-a48b-4d2e-b24b-95c89698eb3b.png?resizew=140)
(1)求
到平面
的距离;
(2)设
为
的中点,平面
平面
,求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f83a04565a8ebaa111894b724b0ba266.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c025ee3317be1099b7bf03a11e37ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/28/307ea1d6-a48b-4d2e-b24b-95c89698eb3b.png?resizew=140)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a3fd5284e160896f07ce367645fd04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f1854ba6cc92481d7a616bd2788a47e.png)
您最近一年使用:0次
2023-02-24更新
|
438次组卷
|
2卷引用:辽宁省葫芦岛市2022-2023学年高三上学期期末数学试题
解题方法
4 . 设B是椭圆
的上顶点,若C上的任意一点P都满足
,则C的离心率的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f10b007a9d54e6a4aa94e88d4acd9789.png)
您最近一年使用:0次
5 . 已知圆
,定点
,N为圆C上一动点,线段MN的中垂线与直线CN交于点P.
(1)证明:
为定值,并求出点P的轨迹
的方程;
(2)若曲线
上一点Q,点A,B分别为
在第一象限上的点与
在第四象限上的点,若
,
,求
面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fe9d1b6e60095953216d48b88be87f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bcb79087603c47aec81fe61155b5ee7.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d62155f10616c31598e10baba8fe9791.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
(2)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/239a6b81a783c8d193c00eb913084011.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56ac45e5bf7bb93dedc701fe16f7f906.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64a52037fa9505a2e1cfd1d492179a67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/184459410405a907798a625760c0d717.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
您最近一年使用:0次
解题方法
6 . 过双曲线
(a>0,b>0)的左焦点F作其中一条渐近线的垂线,交双曲线的左、右两支分别为A,B,若
,则该双曲线的离心率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c90b192c094056bfd8f3a67842cb8b.png)
您最近一年使用:0次
名校
7 . 如图1所示,抛物面天线是指由抛物面(抛物线绕其对称轴旋转形成的曲面)反射器和位于焦点上的照射器(馈源,通常采用喇叭天线)组成的单反射面型天线,广泛应用于微波和卫星通讯等领域,具有结构简单、方向性强、工作频带宽等特点.图2是图1的轴截面,A,B两点关于抛物线的对称轴对称,F是抛物线的焦点,∠AFB是馈源的方向角,记为
,焦点F到顶点的距离f与口径d的比值
称为抛物面天线的焦径比,它直接影响天线的效率与信噪比等.如果某抛物面天线馈源的方向角
满足,
,则其焦径比为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/041875e2-4841-40da-88c8-93533d47ad89.png?resizew=339)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ea4e6de8e8bd5533357a49e5f87330b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce840c53d4b0960eeeea558a3020120b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/041875e2-4841-40da-88c8-93533d47ad89.png?resizew=339)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-02-19更新
|
1140次组卷
|
6卷引用:辽宁省营口市2022-2023学年高三上学期期末数学试题
解题方法
8 . 如图,在四棱锥P﹣ABCD中,底面ABCD是边长为2的正方形,PA=PD=2,E,F分别是PB,CD的中点,AB⊥EF
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/21/0537a703-59cb-4352-ae7d-3dd8d212dc18.png?resizew=154)
(1)求证:平面PAD⊥平面ABCD;
(2)求二面角
的余弦值.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/21/0537a703-59cb-4352-ae7d-3dd8d212dc18.png?resizew=154)
(1)求证:平面PAD⊥平面ABCD;
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43e8acea09ab5ab9edde64d639d6720e.png)
您最近一年使用:0次
9 . 已知椭圆
(
)的离心率为
,且经过点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa1db47a746631df2abe52539a86aed1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/d5f89d39-1f71-4181-8028-38eedb2b3838.png?resizew=186)
(1)求椭圆
的方程;
(2)过
作两直线与抛物线
(m>0)相切,且分别与椭圆C交于P,Q两点,直线
,
的斜率分别为
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
①求证:
为定值;
②试问直线
是否过定点,若是,求出定点坐标;若不是,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7d72a07a4e5acfc140a3cea1f26b951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa1db47a746631df2abe52539a86aed1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/d5f89d39-1f71-4181-8028-38eedb2b3838.png?resizew=186)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfb573fb6f6f37fd615e35c4073c2919.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e1efe96e7776f1b5dfa92c295f8d97d.png)
②试问直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
您最近一年使用:0次
2023-02-19更新
|
582次组卷
|
3卷引用:辽宁省营口市2022-2023学年高三上学期期末数学试题
10 . 已知拋物线
的焦点为
,抛物线上一点A在准线
上的射影为
,且
为等边三角形.若
,则抛物线方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3764ba3aa0a241787f4661026bb14053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/004104bafb5f30338123d4ea2b7fedde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e143ec3e2556df0016894aad79a6b2a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次