1 . 已知椭圆
的离心率为
,其左、右顶点分别为
,左右焦点为
,点
为椭圆上异于
的动点,且
的面积最大值为
.
(1)求椭圆
的方程及
的值;(
、
分别指直线
的斜率)
(2)设动直线
交椭圆
于
两点,记直线
的斜率为
,直线
的斜率为
,且
.
①求证:直线
过定点;
②设
的面积分别为
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a200ca2c4af794f4d1c6a5443830b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc157c66eef6affd86e48432176c4240.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9626bd07f966ea26a51dcd8ceba04ff9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edf32f4d595c02a8c0f7cc5f8fd0c931.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d4a832771ba45d407f31000c8fcf37.png)
(2)设动直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2659bf25c135efc1e342b5f5e92d48d2.png)
①求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
②设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd9a706cc0a6ad655c22d40cea0efa5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3637753af5ce86be9c23a9beb6b5067.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c59c4295f918205f5598ecc9a96d8867.png)
您最近一年使用:0次
2 . 用坐标法解答以下问题,如图,已知矩形
中,
,
,
分别为
的中点,
为
延长线上一点,________.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/de218a9c-395b-4e56-8a4e-9090293da2ef.png?resizew=125)
从①②中任选其一,补充在横线中并作答,如果选择两个条件分别解答,按第一个解答计分,
①连接
并延长交
于点
,求证:
;
②取
上一点
,使得
,求证:
三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ef19f98e86ae7504671413780b3b1a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c4cd264c97c1f261229925cc5a6761.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/de218a9c-395b-4e56-8a4e-9090293da2ef.png?resizew=125)
从①②中任选其一,补充在横线中并作答,如果选择两个条件分别解答,按第一个解答计分,
①连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9b3940c3ea6eb8ba98ef7fbf5cce37.png)
②取
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd98ef7ede5964bed06156a27020f07b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9b3940c3ea6eb8ba98ef7fbf5cce37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/898d3e920ab55020c4fb064963a139cc.png)
您最近一年使用:0次
3 . 现有一组互不相同且从小到大排列的数据:
,其中
.为提取反映数据间差异程度的某种指标,今对其进行如下加工:记
,作函数
,使其图像为逐点依次连接点
的折线.
(1)求
和
的值;
(2)设
的斜率为
,判断
的大小关系;
(3)证明:当
时,
;
(4)求由函数
与
的图像所围成图形的面积.(用
表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82fb4cf459841e547e2d358d392abc0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16c8d0474f7d81ef8dbefaacfd5afe7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/184ab0d79c05f5ca0254518f669090bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39122971f02da2ac15fff63e55458178.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f54b6a060d6c51a328341df76013bd89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74156327e5659301f391814605688899.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/202f3247f015783652c3b80fb5759f57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ef9ee0b2b2282c2be75fa875fac18fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90515707a364861cc94ebb7b0d9c5a15.png)
(3)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c7b69e93488fcd2a195cb9793e94fc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a89f5698f41b542aff4bcebbc81ff92b.png)
(4)求由函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/874781ab5711bff6ee8c9cbad5b3b3dc.png)
您最近一年使用:0次
名校
解题方法
4 . 如图,在平面直角坐标系
中,已知抛物线C:
的焦点为F,准线为l,过点F且斜率大于0的直线交抛物线C于A,B两点,过线段AB的中点M且与x轴平行的直线依次交直线OA,OB,l于点P,Q,N.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/ff1cb042-7fe5-4cc5-bf77-d23cb5cdf398.png?resizew=149)
(1)判断线段PM与NQ长度的大小关系,并证明你的结论;
(2)若线段NP上的任意一点均在以点Q为圆心、线段QO长为半径的圆内或圆上,求直线AB斜率的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/ff1cb042-7fe5-4cc5-bf77-d23cb5cdf398.png?resizew=149)
(1)判断线段PM与NQ长度的大小关系,并证明你的结论;
(2)若线段NP上的任意一点均在以点Q为圆心、线段QO长为半径的圆内或圆上,求直线AB斜率的取值范围.
您最近一年使用:0次
2022-05-05更新
|
1021次组卷
|
4卷引用:四川省宜宾市叙州区第一中学校2023届高三三诊模拟考试数学(理)试题
四川省宜宾市叙州区第一中学校2023届高三三诊模拟考试数学(理)试题四川省宜宾市叙州区第一中学校2023届高三三诊模拟数学(文)试题江苏省苏锡常镇四市2022届高三下学期5月教学情况调研(二)数学试题(已下线)考点23圆锥曲线综合应用-2-(核心考点讲与练)-2023年高考数学一轮复习核心考点讲与练(新高考专用)
名校
解题方法
5 . 如图,已知椭圆
的离心率为
,F为椭圆C的右焦点,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/12/58e25e5c-eaaf-4ced-a781-9cdedd4c9f7a.png?resizew=150)
(1)求椭圆C的方程;
(2)设O为原点,P为椭圆上一点,AP的中点为M,直线OM与直线
交于点D,过O且平行于AP的直线与直线
交于点E.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/323227dd8a7a31c078eac609b9acf472.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f236182642bce92ffb3668b325ea5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7bf417767442935d2b9e49d18fbea79.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/12/58e25e5c-eaaf-4ced-a781-9cdedd4c9f7a.png?resizew=150)
(1)求椭圆C的方程;
(2)设O为原点,P为椭圆上一点,AP的中点为M,直线OM与直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f307a38b295900b4127badf3a12167b.png)
您最近一年使用:0次
2018-04-03更新
|
940次组卷
|
3卷引用:北京市中国人民大学附属中学2023届高三统练(4)数学试题