1 . 已知点
、
,平面直角坐标系上的一个动点
满足
,设动点
的轨迹为曲线
.
(1)点
是曲线
上的任意一点,
为圆
的任意一条直径,求
的取值范围;
(2)已知点
、
是曲线
上的两个动点,若
(
是坐标原点),试证明:直线
与某个定圆恒相切,并写出定圆的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/486279e7ff9f2b76c2ce712f5dedcb9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/385afe18c3fad66fdeadf74be824283c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/662ad7f6a6c6a3d97ebdc5017b17fe8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)点
![](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/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc0d444e91490cd43dd86a3825dcee31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef3ad35c881ab577ad53f33c03dda49b.png)
(2)已知点
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc4876efa91f38d11ce12fed2e1fbf2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
名校
解题方法
2 . 设椭圆E1的长半轴长为a1、短半轴长为b1,椭圆E2的长半轴长为a2、短半轴长为b2,若
,则我们称椭圆E1与椭圆E2是相似椭圆.已知椭圆E:
,其左顶点为A、右顶点为B.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/5dac46bc-e949-45a4-b896-78217eb24e98.png?resizew=153)
(1)设椭圆E与椭圆F:
是“相似椭圆”,求常数s的值;
(2)设椭圆G:
,过A作斜率为k1的直线l1与椭圆G只有一个公共点,过椭圆E的上顶点为D作斜率为k2的直线l2与椭圆G只有一个公共点,求|
的值;
(3)已知椭圆E与椭圆H:
是相似椭圆.椭圆H上异于A、B的任意一点C(x0,y1),且椭圆E上的点M(x0,y2)(
)求证:AM⊥BC.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd731967bb86ddf18e9e473daa96041a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82e7d9f4f7ace849e09e9adcb786b7f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/5dac46bc-e949-45a4-b896-78217eb24e98.png?resizew=153)
(1)设椭圆E与椭圆F:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76b1f480c4cc86e47a97b712ce8473e7.png)
(2)设椭圆G:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e8af798961237df56e74e191b88dc65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/249f2c7aeab56b0265bbfb3b57011453.png)
(3)已知椭圆E与椭圆H:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f89b0bea245d8e71276f43503bae040.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddef7fc1094028667143de29690d9a07.png)
您最近一年使用:0次
3 . 椭圆C:
的离心率为
,短轴长为4.左右顶点分别为
、![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://img.xkw.com/dksih/QBM/2021/11/12/2849846405218304/2850636297355264/STEM/8e2b2a09089842c984424aad633e2b2b.png?resizew=259)
(1)求椭圆C的方程;
(2)设直线l:
与x轴交于点D,P点是椭圆C异于
,
的动点,直线
,
分别交直线l于E,F两点,求证:
为定值.
(3)如图,原点O到
:
距离为1,直线
与椭圆C交于A,B两点,直线
:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95f8ef5ab6007dcbc90d01031eb42e2b.png)
与
平行且与椭圆C相切于点M(O,M位于直线
的两侧).记△MAB,△OAB的面积分别为
,
,若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eed6b9540857e386651e191a0a5b5a98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee14db57f0c762aad845cf5b4a243c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://img.xkw.com/dksih/QBM/2021/11/12/2849846405218304/2850636297355264/STEM/8e2b2a09089842c984424aad633e2b2b.png?resizew=259)
(1)求椭圆C的方程;
(2)设直线l:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64dd02a89474b1d9e982b0f36bdfc4bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0ff310aabd2282b539537ebed3f788.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edc48974114e23f5a801843710c7ae21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df9187ec9f8431065fe2809ace327b40.png)
(3)如图,原点O到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15b256345d7109e081b7c895591e995d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95f8ef5ab6007dcbc90d01031eb42e2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2f20d5efb28db7a9888810f8621163a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5777fb059759ad10ccb602be54a92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
4 . 已知椭圆
:
的长轴长为4,过
的焦点且垂直长轴的弦长为1,A是椭圆的右顶点,直线
过点
交椭圆于C,D两点,
交y轴于点P,
,
,记
,
,
的面积分别为S,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/7578a310-3fc1-4152-b676-5ae4506c698d.png?resizew=197)
(1)求椭圆C的标准方程;
(2)求证:
为定值;
(3)若
,当
时,求实数
范围.
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1cf8af6e62058cc4e2d83d5da7f4c68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6928171d6c20eda9d7f03c0382d9d3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/680f04173ae541d14e359643390cd4bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bbf9680f74a9ac5d934304654ce2771.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/372629a8666de1e9bac3e7daadcac7b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/7578a310-3fc1-4152-b676-5ae4506c698d.png?resizew=197)
(1)求椭圆C的标准方程;
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febf7413b35cf2889fdb57a6b519087c.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/869c20a8e00ea2b5fa10289e2e1ab4a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987b8f9b7bc1f9c3b943ee2e8baac2b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2022-02-23更新
|
1091次组卷
|
3卷引用:上海市华东师范大学附属东昌中学2022届高三下学期阶段检测数学试题
21-22高二·全国·课后作业
名校
解题方法
5 . 已知
,
是其左右焦点,
,直线
过点
交
于
两点,
在
轴上方,且
在线段
上,
(1)若
是上顶点,
,求
;
(2)若
,且原点
到直线
的距离为
,求直线
;
(3)证明:对于任意
,使得
的直线有且仅有一条.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4203a35ca9d3174d600fffc3dae1ea63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1e2794ced703edd92eace985ea0d411.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.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/2cdba1337ec85fa9722cb4b320a82ae6.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f6ebe2dac02115a216851d43a9d10d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9405d4afeabc2ff7200ecb50a58bdc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b29a11aa9eec39c6d9ae63985e3ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(3)证明:对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a47abc50f3effce1185d73f70f28652.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66a39fe540f5f468a022d57f0b821d3d.png)
您最近一年使用:0次
2022-03-13更新
|
856次组卷
|
7卷引用:上海市洋泾中学2023届高三上学期开学考试数学试题
上海市洋泾中学2023届高三上学期开学考试数学试题(已下线)专题28 椭圆-2022年高三毕业班数学常考点归纳与变式演练(理科专用)(已下线)易错点16 椭圆-备战2022年高考数学考试易错题(全国通用)沪教版(2020) 选修第一册 新课改一课一练 期中测试C(已下线)第16讲 圆锥曲线综合(已下线)2.4 抛物线(提高练)-2021-2022学年高二数学同步训练精选新题汇编(人教A版选修2-1)(已下线)第三章 圆锥曲线的方程(提分小卷)-【单元测试】2021-2022学年高二数学尖子生选拔卷(人教A版2019选择性必修第一册)
6 . (本小题满分12分)
已知椭圆
,直线
不过原点O且不平行于坐标轴,
与
有两
个交点A、B,线段AB的中点为M.
(1)若
,点K在椭圆
上,
、
分别为椭圆的两个焦点,求
的范围;
(2)证明:直线
的斜率与
的斜率的乘积为定值;
(3)若
过点
,射线OM与
交于点P,四边形
能否为平行四边形?
若能,求此时
的斜率;若不能,说明理由.
已知椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6651a5a8fe78e43918d245b97c4811fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/250463fe0a241ded5e28ac2c0e7ca699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
个交点A、B,线段AB的中点为M.
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1553006815bd3d2ff0509a60f8e1f11f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a09a8ac969e5cec3be6abf4ff44c692e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce6758b8b074d33ea9e82818593656e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f77dbec0658401da14c304a331354236.png)
(2)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37a0397c811fe80c80ecd5b871201987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c3c45d2ad3093a3877a8e0e5ee7bd3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4b37603d3b3530824c24907c708d8c.png)
若能,求此时
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2018-06-27更新
|
246次组卷
|
3卷引用:上海市进才中学2022届高三下学期期中数学试题
上海市进才中学2022届高三下学期期中数学试题上海市杨浦区2018届高三下学期质量调研(二模)数学试题(已下线)2017-2018学年度下学期高中期末备考【通用版】高二【精准复习模拟题】A【基础卷02】【文科数学】(教师版)