1 . 已知椭圆
:
的离心率为
,点
在椭圆上,
为坐标原点.
![](https://img.xkw.com/dksih/QBM/2020/3/3/2411550307958784/2412995247276032/STEM/811862db57ce4b288edfe2b6747afc8d.png?resizew=210)
(1)求椭圆
的标准方程;
(2)已知
、
为椭圆上不同的两点.①设线段
的中点为点
,证明:直线
、
的斜率之积为定值;②若
、
两点满足
,当
的面积最大时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85d23fc512ad69a2d5919ce690407704.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/2020/3/3/2411550307958784/2412995247276032/STEM/811862db57ce4b288edfe2b6747afc8d.png?resizew=210)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知
![](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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be99fa94a1f3e4964fcc13a14fab9ba5.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/3f349d89e029746e0ca735c154636aa1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b8189f7b0ffe4d20bf0fad43b4ed589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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2 . 如图,在四棱锥
中,底面
是平行四边形,
,
底面
,
,E,F分别为
,
的中点,点M在线段
上.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/10/456b4198-b369-44ed-9d55-fc27b1e44a9b.png?resizew=165)
(1)求证:面
面
;
(2)若M为线段
的中点,求直线
与平面
所成角的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/319536a5b0d3f94d4b1a495c3b19d79b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c3b8822bbb5ba39c90550ac277cfe88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/10/456b4198-b369-44ed-9d55-fc27b1e44a9b.png?resizew=165)
(1)求证:面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e83401c0e1468e1f3385bdd68d3dd21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)若M为线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce6c0e9de83f2e64ae33609fc08459d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
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3 . 如图所示,
为山脚两侧共线的三点,计划沿直线
开通穿山隧道.为求出隧道
的长度,在山顶
处测得三点的俯角分别为
;测得
.用以上数据(或其中的部分数据)表示隧道
长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61ba63ad02b1d5af2982fac3d91eb15c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/953cefc60d990e4978f144d70005efc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/10/6e170e8f-3ded-4f18-94e4-297e69f95073.png?resizew=355)
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4 . 设
均为正数,且
.
(1)证明:
;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/751e274e9107d780c39ba9c49d6daefb.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4ce85547266d66174062f1700fe1e2.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0ee79d588c459ae4ca749e7b12d844b.png)
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解题方法
5 . 已知椭圆
经过两点
.
(1)求椭圆
的方程.
(2)已知点
,直线
过点
并且与
相交于
、
两点,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd486b8796b3454eab219c28ed131683.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afbd1f759ef7ff28bb0d422be076ac52.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cb16438684d3eaac8eaf480bb7b38a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.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/20a5e0a51c9e14fb246b0ba0b231c1e3.png)
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6 . 已知
,数列A:
,
,…
中的项均为不大于
的正整数.
表示
,
,…
中
的个数(
).定义变换
,
将数列
变成数列
:
,
,…
其中
.
(1)若
,对数列
:
,写出
的值;
(2)已知对任意的
(
),存在
中的项
,使得
.求证:
(
)的充分必要条件为
(
);
(3)若
,对于数列
:
,
,…
,令
:
,求证:
(
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce056bb311610344f135cb4556ec077c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9e5dfcc28321b563a8012ec2899c502.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e916da5bbc4b0ee4a28b8cac0441569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40451e0f90ba4df0cb35143b93303a22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a9157ebffc000886668360981197041.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c213b8556a744796d802db4e58985a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/759a1cbe003f428408437339560e3266.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96ee2879f90de81ba04d18aa6079de35.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e984320c35fd2f65f72df993cb2c97a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1cb1d423ec1930011e4c7ed79fb9a7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6931690445142df14a6f487d8fff4a7e.png)
(2)已知对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fab1e6771cf5aa28cf594514258ead70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/681ae1522a36768618f7ddaf74abbb7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41c85be1194188e0a726d343b1c9237f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03ca9e69e2b87edb1044bc902bf8f0b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4043f483f8ab44ce5895d8c85dd30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e80d145b01074362d1e4ae6c6391326.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/029c1b13246250173b74f56d7007269e.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a64ed93e3ac6fae4ec774bc4e90cb05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f7d7a031e551e9f6f7de0351e1380d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0850369056d53c0f7758ecd59db920d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48b26484e0328c0fc9c29b774aef4287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4043f483f8ab44ce5895d8c85dd30.png)
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2020-03-04更新
|
372次组卷
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3卷引用:【区级联考】北京市东城区2019届高三第二学期综合练习(一)数学(理)试题
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7 . 已知函数
.
(1)当
时,求
的极值;
(2)讨论
的单调性.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4ae37a658b8bf085021a4f15d396e1f.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb8e1dd8da540badcb9a8f427c5b202e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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解题方法
8 . 若集合
,
,且
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fab32d5c9be04a04909b1e8f745cfa2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6deb420e37b7ca7334fb74ddb899119c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ad78dc8b8aed907b4fe9640c997454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2020-03-04更新
|
494次组卷
|
5卷引用:考点01 集合(考点)-备战2021年新高考数学一轮复习考点微专题
(已下线)考点01 集合(考点)-备战2021年新高考数学一轮复习考点微专题江西省新余市第一中学2019-2020学年高一上学期第一次段考数学试题江西省南昌市第三中学2020-2021学年度高一10月份月考数学试题(已下线)【南昌新东方】 江西省南昌三中2020-2021学年高一上学期10月第一次月考数学试题江苏省徐州市王杰中学2021-2022学年高一10月阶段性测试数学试题
名校
9 . 在平面直角坐标系
中,已知直线
(
为参数),以坐标原点为极点,
轴的非负半轴为极轴建立极坐标系.点
在曲线
上运动,点
为线段
的中点.
(1)求动点
的运动轨迹
的参数方程;
(2)若直线
与
的公共点分别为
,当
时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d430b5c4c3a4d1c8e55550ae2efe5237.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb32336a07bdea17b0c634a56337fc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c7d3d89b684b78bd1c216ddd2e070b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2020-03-04更新
|
842次组卷
|
6卷引用:重庆市第一中学校2019届高三下学期第四次月考(理)数学试题
名校
10 . 如图,在平面四边形ABCD中,若
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2020/3/1/2410280873664512/2411761409302528/STEM/38792083145341c2bf03af3ced79132d.png?resizew=124)
(1)求
;
(2)若
,求BC.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4795ee1f96b430529934e2231b38885d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb48a51345750060a62c1d1be14001f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/454328a8e75953fdb0835ce80d9566e3.png)
![](https://img.xkw.com/dksih/QBM/2020/3/1/2410280873664512/2411761409302528/STEM/38792083145341c2bf03af3ced79132d.png?resizew=124)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/868ff1350bd72625328c85c3097cd85e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c73a630682dadedc68a22be17530a83b.png)
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2020-03-03更新
|
645次组卷
|
8卷引用:甘肃省天水市第一中学2021届高三十模数学(文)试题