1 . 已知椭圆
的左、右焦点分别为
,其离心率为
,
是
上的一点.
(1)求椭圆
的方程;
(2)过右焦点
的直线
与椭圆
交于
两点,线段
的垂直平分线交直线
于点
,交直线
于点
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5439f5ff9bd5deec0f0ef35c6f605b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)过右焦点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](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/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/639c3d2ff5ee566fcc1b69c65712a661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26a189b08ef38f4893878c56f8414397.png)
您最近一年使用:0次
2 . 已知椭圆E:
(
)的短轴长为2,且离心率为
.
(1)求E的方程;
(2)若直线
斜率存在且过点
与E相交于
、
两点,M为E的左顶点,且满足
,求k.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/347b27924768b3d4ae88b792fc6ed925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
(1)求E的方程;
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.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/ada25f76504c3fd1226da43c94cb4277.png)
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3 . 若方程
只有一个实数解,则b的取值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9600face3dcec241b4fb21d2466f7617.png)
您最近一年使用:0次
解题方法
4 . 已知椭圆C:
(
)的左、右焦点分别为
,
,过
的直线l与椭圆C交于P,Q两点,与y轴交于点G.
(1)已知过原点且与l平行的直线
与椭圆C交于点A,B,求证:
;
(2)若椭圆C的离心率为
,且
,
,问
是否为定值?若是,求
的值;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
(1)已知过原点且与l平行的直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13dea1bd3d0dd84b8b6f6ff634c5600c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/624bf696e787cad7ce0f61b0404d6ace.png)
(2)若椭圆C的离心率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1996ba299a5a938593f8775404bdc35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6d155673e6c19aca7c4b064d6a79557.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a19bc9c7083b1e9538337a3038712896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a19bc9c7083b1e9538337a3038712896.png)
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名校
5 . 已知
是椭圆
上的动点,则
点到直线
的距离的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82e7d9f4f7ace849e09e9adcb786b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b0432091fc16760da999441f23e416.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-12-24更新
|
1606次组卷
|
8卷引用:安徽省淮北市第一中学2023-2024学年高二上学期第三次月考数学试题
安徽省淮北市第一中学2023-2024学年高二上学期第三次月考数学试题河南省南阳市第一中学校2024届高三上学期第六次月考数学试题河南省信阳市固始县高级中学第一中学2023-2024学年高二上学期第三次月考数学试题河南省信阳市信高教育集团南湾校区2023-2024学年高二上学期期末复习检测数学试题(一)(已下线)专题15 根据直线与椭圆的位置关系求参数(期末选择题15)2023-2024学年高二数学上学期期末题型秒杀技巧及专项练习(人教A版2019)江西省上饶市私立新知学校2023-2024学年高二上学期期末数学试题(已下线)专题03 椭圆13种常见考法归类(3)(已下线)热点7-1 直线与圆综合(10题型+满分技巧+限时检测)
解题方法
6 . 已知椭圆
的两个焦点
,
的坐标分别为
,
,离心率
.
(1)求椭圆
的方程;
(2)一条斜率为
的直线
与椭圆交于不同的两点
,
,求线段
中点横坐标
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c91b17113b6ccbdc8579bc20f9aa68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e544ce30f9debf4e626677378bbcbff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ce535f58c1156a2ace1724615de48e6.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)一条斜率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31d8b6ea1f1f868490bd04299c3bb3b5.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/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
您最近一年使用:0次
7 . 已知点
在离心率为
的椭圆
上,点
为椭圆
上异于点
的两点.
(1)求椭圆
的方程;
(2)若
,过点
两点分别作椭圆
的切线,这两条切线的交点为
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c179fe7eff7abfdd092b63c9c1b82d0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c6162828793e697cb1ad643b287c4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab609a6574633ebabcff3e73fa862081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab609a6574633ebabcff3e73fa862081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9a4e603a1feb6ccb810601951fd6d1c.png)
您最近一年使用:0次
8 . 如图,小明同学先把一根直尺固定在画板上面,把一块三角板的一条直角边紧靠在直尺边沿,再取一根细绳,它的长度与另一直角边相等,让细绳的一端固定在三角板的顶点A处,另一端固定在画板上点F处,用铅笔尖扣紧绳子(使两段细绳绷直),靠住三角板,然后将三角板沿着直尺上下滑动,这时笔尖在平面上画出了圆锥曲线C的一部分图象.已知细绳长度为3,经测量,当笔尖运动到点P处,此时,
,
.设直尺边沿所在直线为a,以过F垂直于直尺的直线为x轴,以过F垂直于a的垂线段的中垂线为y轴,建立平面直角坐标系.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/20/3280b562-4d23-4d61-98de-88a447bfabe8.jpg?resizew=138)
(1)求曲线C的方程;
(2)斜率为k的直线
过点
,且与曲线C交于不同的两点M,N,已知k的取值范围为
,若
,求
的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b885ab7c607be0dbd27c1e57941e81f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc603cd2426c2eb1a7f330d768e5d2cb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/20/3280b562-4d23-4d61-98de-88a447bfabe8.jpg?resizew=138)
(1)求曲线C的方程;
(2)斜率为k的直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d307720f68b610bf1a7660f0c46424b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4772c835cbe626040ecc4df30e6f0ccc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0df31126849d010525cbeee019bae5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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2023-12-21更新
|
498次组卷
|
3卷引用:河南省南阳市2023-2024学年高二上学期12月月考数学试题
名校
解题方法
9 . 已知椭圆
(
)的长轴长是短轴长的2倍.
(1)求椭圆的离心率
;
(2)直线
过点
且与椭圆有唯一公共点
,
为坐标原点,当
的面积最大时,求椭圆的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
(1)求椭圆的离心率
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c41b2f7ca11db3aaea46c69286adbce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
您最近一年使用:0次
2023-12-20更新
|
399次组卷
|
4卷引用:广东省广州市天河中学2023-2024学年高二上学期12月月考数学试题
名校
解题方法
10 . 椭圆
的左、右焦点分别为
,
为坐标原点,则以下说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb4402aeb853b22f20992156957ef0fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
A.过点![]() ![]() |
B.椭圆![]() ![]() |
C.若实数![]() ![]() ![]() |
D.![]() ![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
2023-12-15更新
|
102次组卷
|
2卷引用:四川省成都市石室阳安中学2023-2024学年高二上学期12月月考数学试题