1 . 已知椭圆
(
)的离心率为
,直线
交椭圆
于
两点,点
在椭圆
上(与点
不重合).若直线
,
的斜率分别为
,
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c870c7cf541f0910388a4bdc866014a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ca8b6ac96dfe0046b7ca1745176ca22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b64c4d11679f49d9f6cf231adbfdd5af.png)
A.2 | B.![]() | C.4 | D.![]() |
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3卷引用:广西贵港市2023届高三毕业班上学期12月模拟考试数学(理)试题
广西贵港市2023届高三毕业班上学期12月模拟考试数学(理)试题广西壮族自治区贵港市2023届高三上学期12月模拟考试数学(文)试题(已下线)第五节 椭圆 第二课时 直线与椭圆的位置关系 核心考点集训
解题方法
2 . 直线
与焦点在x轴上的椭圆
总有公共点,则实数m的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/292cbf1c6bfe5fb3876eb1d8434b6c66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40e030e40306ef61056e68956d0fbcef.png)
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名校
3 . 已知椭圆
:
,则下列关于椭圆
的结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c190e8bb81a4d26cf638ed246193cc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.焦点坐标为![]() ![]() | B.长轴长为![]() |
C.离心率为![]() | D.直线![]() ![]() |
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5卷引用:广西玉林市陆川县实验中学2022-2023学年高二上学期期中联考数学试题
广西玉林市陆川县实验中学2022-2023学年高二上学期期中联考数学试题河北省沧州市任丘第一中学2021-2022学年高二上学期期末数学试题河北省沧州市2021-2022学年高二上学期期末数学试题(已下线)第三章 圆锥曲线的方程(A卷·知识通关练)(2)(已下线)3.1.2 椭圆的几何性质(3)
名校
解题方法
4 . 如图,已知椭圆
,双曲线
,若以椭圆
的长轴为直径的圆与双曲线
的一条渐近线交于A,B两点,且椭圆
与该渐近线的两交点将线段AB三等分,则双曲线
的离心率为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/1122fbce-7a6c-4b62-8543-bdbbbe1d5889.png?resizew=190)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93c0e2dea2f22992b0f4e8400b13af18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c64acf2cf103416ef9fdfbd01933f39c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/1122fbce-7a6c-4b62-8543-bdbbbe1d5889.png?resizew=190)
A.9 | B.5 | C.![]() | D.3 |
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名校
解题方法
5 . 已知椭圆
:
的左右焦点分别为
,
,且椭圆点任意一点
满足
.
(1)求椭圆C的方程;
(2)若直线
与椭圆C交于不同的两点M,N,且线段MN的中点Р在直线
上,求m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/813f9a2814013e2407b5b1c216159359.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16fd15503ee692f8286b0312f7c6f0cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10704a960096ce1faca4963a19114ce3.png)
(1)求椭圆C的方程;
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd8e2fa0e4383590afe6d8f1d7aa8bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cc6611a01d1efcdac7054ebae2c0d29.png)
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名校
解题方法
6 . 已知椭圆
:
的离心率为
,焦距为
.直线
与椭圆
有两个不同的交点
.
(1)求椭圆
的方程;
(2)设直线
方程为
,先用
表示
,然后求其最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1174142f3bba761585b6bc2653009b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.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)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54479885d4ab2f717d2e97718da04b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
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2020-07-27更新
|
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