1 . 已知离心率
的椭圆
的中心在原点
,焦点在
轴上,直线
交
于
、
两点,且
,其中点
.
(1)求
的面积
的最大值,并求此时椭圆
的方程;
(2)对于(1)的椭圆
上,若存在不同的两点关于直线
对称,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/234e7679481ec0d01c915b7fbb71891d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.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/ea60b7fd21ff012243a74f196d379501.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2f117dc9adcb8fa7acf25bd2cbf283.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
(2)对于(1)的椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce37928403e28dea457850542edd414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
名校
解题方法
2 . 已知
是圆柱
下底面圆
的直径,
是下底面圆
上一点,
是圆柱的母线,且
,则点
到平面
的距离为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192f4f9446c954a291f779d963f90257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b0da5f243d572601079af407d62c849.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf97d120b99a2ee95526fc57d0ce49f.png)
您最近一年使用:0次
名校
3 . 下列说法正确的是( )
A.命题![]() ![]() ![]() ![]() |
B.命题![]() ![]() ![]() |
C.命题“任意一个平行四边形的四个顶点都在同一个圆上”的否定是假命题 |
D.命题“存在两个不全等三角形的面积相等”的否定是假命题 |
您最近一年使用:0次
2023-10-11更新
|
357次组卷
|
3卷引用:河南省商丘市部分学校2023-2024学年高一上学期阶段性测试(一)数学试题
河南省商丘市部分学校2023-2024学年高一上学期阶段性测试(一)数学试题河南省安阳市2023-2024学年高一上学期阶段性测试(一)数学试题(已下线)第一篇 “必拿”选择前5填空前2 专题2 量词的应用【练】
4 . 已知动点
到点
的距离与到
轴的距离的差为2.
(1)求动点
的轨迹方程;
(2)若过点
的直线
与动点
的轨迹交于
两点,直线
与
轴交于点
,过
作直线
的垂线,垂足分别为
,若
(S表示面积),求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa080648224385147faca0e4a0aace8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be92f0e0012a7696c78e3e00513edefd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)若过点
![](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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c3d2ff5ee566fcc1b69c65712a661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c3d2ff5ee566fcc1b69c65712a661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16047919b339fe722439500dd0dc276e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
您最近一年使用:0次
名校
5 . 已知圆
的直径
,
圆
所在平面,
,点
是圆周上不同于
、
的一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/4/f1545863-8d2f-4ad2-84a5-ebb9446b7057.png?resizew=167)
(1)证明:
;
(2)已知
,点
是棱
上一点,若
与平面
所成角的余弦值为
,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.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://img.xkw.com/dksih/QBM/editorImg/2023/2/4/f1545863-8d2f-4ad2-84a5-ebb9446b7057.png?resizew=167)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5148e7fc64ac3fed107192236f8e129d.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b60870baa5e3fbc33a749aa5f0a94be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e699f6e1923284a5eecdc897bfbc2337.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2023-01-18更新
|
425次组卷
|
3卷引用:河南省商丘市部分学校2022-2023学年高二上学期期末考试数学试题
名校
解题方法
6 . 如图,线段
是圆柱
的母线,
是圆柱下底面
的内接正三角形,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/18/8258e722-559c-4234-adbe-98aaf43fd125.png?resizew=140)
(1)劣弧
上是否存在点D,使得
平面
?若存在,求出劣弧
的长度;若不存在,请说明理由.
(2)求平面
和平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192f4f9446c954a291f779d963f90257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/effe791cf7422d81981f7f188e30dd76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/18/8258e722-559c-4234-adbe-98aaf43fd125.png?resizew=140)
(1)劣弧
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed41d321f4c0717ac5b443aad942d9a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5483adc72a04c578f3b33b010720194.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edc9ffc43a56921fe79f8602636b8b0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bd6ffb78dad3375efa3b08ab518553d.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76528e1056b52c4023421fba749aabed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/982a72de174de5de98aa58b4c7d5a886.png)
您最近一年使用:0次
2022-11-11更新
|
1643次组卷
|
6卷引用:河南省豫东四校2022-2023学年高二下学期第一次联考数学试题
名校
解题方法
7 . 如图所示,三棱锥
中,
为等边三角形,
平面
,
,
.点D在线段
上,且
,点E为线段SB的中点,以线段BC的中点
为坐标原点,OA,OB所在直线分别为x,y轴,过点
作SA的平行线为z轴,建立空间直角坐标系,则下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/c787ad86-74dd-457c-9db0-10dd366abdec.png?resizew=164)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c83f8945042b9c8fb2fbdac9308d62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f643db1101c352132c1d670e9cb30e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2bc5e50b8dfa02601c70822252854a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abab2607064bc30e0babe59ca4892ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/c787ad86-74dd-457c-9db0-10dd366abdec.png?resizew=164)
A.直线CE的一个方向向量为![]() | B.点D到直线CE的距离为![]() |
C.平面ACE的一个法向量为![]() | D.点D到平面ACE的距离为1 |
您最近一年使用:0次
2022-11-23更新
|
380次组卷
|
7卷引用:河南省豫东四校2022-2023学年高二下学期第一次联考数学试题
河南省豫东四校2022-2023学年高二下学期第一次联考数学试题安徽省亳州市蒙城第一中学东校区2022-2023学年高二上学期期中数学试题安徽省部分省示范中学2022-2023学年高二上学期11月期中联考数学试题(已下线)6.3.4 空间距离的计算(练习)-2022-2023学年高二数学同步精品课堂(苏教版2019选择性必修第二册)江苏省淮安市洪泽湖高级中学2022-2023学年高二下学期第一次月考数学试题安徽省宣城市2022-2023学年高二上学期期中数学试题山东省日照市实验高级中学2023-2024学年高二上学期期中模拟测试数学试题(二)
8 . 几何学中,把满足某些特定条件的曲线组成的集合叫做曲线族.点
是椭圆族
上任意一点,如图所示,椭圆族T的元素满足以下条件:①长轴长为4;②一个焦点为原点
;③过定点
,则
的最大值是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/147498f7-00dd-4321-8dc4-6a9dad8743a4.png?resizew=187)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6e298293515d3c5d8343b668fe8541d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45e51a1df6628da1a46027c97d5beec2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/147498f7-00dd-4321-8dc4-6a9dad8743a4.png?resizew=187)
A.5 | B.7 | C.9 | D.11 |
您最近一年使用:0次
2022-11-19更新
|
465次组卷
|
3卷引用:河南省豫东四校2022-2023学年高二下学期第一次联考数学试题
9 . 判断下列每小问中,p是q的什么条件(直接写出结论即可):
(Ⅰ)
,
;
(Ⅱ)p:关于x的方程
有两个不相等的实根,
;
(Ⅲ)p:四边形的对角线互相平分且长度相等,q:四边形是矩形;
(Ⅳ)p:两个三角形的三个角分别对应相等,q:两个三角形全等;
(Ⅴ)p:直线与圆有两个交点,q:直线上存在点到圆心的距离小于圆的半径.
(Ⅰ)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad8b22086cd32049276b1a5390348d0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9bfa481f89cad337cb00cab64d5dac.png)
(Ⅱ)p:关于x的方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13fa32c1e926f40a0722d106563777ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c70593a243d263ddf6d56e7d09cbe8a3.png)
(Ⅲ)p:四边形的对角线互相平分且长度相等,q:四边形是矩形;
(Ⅳ)p:两个三角形的三个角分别对应相等,q:两个三角形全等;
(Ⅴ)p:直线与圆有两个交点,q:直线上存在点到圆心的距离小于圆的半径.
您最近一年使用:0次
解题方法
10 . 抛物线
:
的焦点为
,点
在直线
上,过
作
轴的垂线,交抛物线
于点
,直线
与
轴的交点为
,当点
的横坐标为
时,四边形
的周长为
.
(Ⅰ)求
的值;
(Ⅱ)过点
作抛物线
的切线,切点分别为
,
,证明:直线
过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6cee49406aca78a5bb7b57e86f57528.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb70fdf064b9193e506ca43f4672af56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb70fdf064b9193e506ca43f4672af56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d527091d88ffaa9560d398bbf7b9744.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41a6d5add30526296ac2b5e9fea04b77.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
(Ⅱ)过点
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2021-06-22更新
|
267次组卷
|
2卷引用:河南省商丘市部分学校联考2020-2021学年高二下学期阶段性测试(五)理科数学试题