1 . 已知椭圆
:
的上顶点和右焦点都在直线
上.
(1)求
的标准方程;
(2)已知直线
与
交于
,
两点,
,
,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/0ec89d17a1b8f7961e2f1f27c2d50685.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f616752f1b1dc6235262f4bba95d71af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/c6b85b1edb513d3a9d6fbeb74422aba0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f30acc34f4ee1077532ae6808af2ab2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2 . 已知椭圆
的右焦点为
,离心率
,点
到左顶点的距离为3.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/17/83148a44-5f48-47f8-aca9-85331ff3a9e6.png?resizew=199)
(1)求椭圆
的方程;
(2)若
是椭圆
的上下两顶点,
是椭圆
上异于
关于
轴对称的两点,直线
与
轴分别交于点
.试判断以
为直径的圆是否过定点,如经过,求出定点坐标;如不过定点,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c7316976a221c051a2c14df80b1347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/17/83148a44-5f48-47f8-aca9-85331ff3a9e6.png?resizew=199)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca66a268d6f46e0e9d5d9151b785be60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3c032441543354c154ee67d744abb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
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2023-04-15更新
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2卷引用:广东省梅州市五校(五校虎山中学、平远中学、水寨中学、丰顺中学、梅州中学联考)2022-2023学年高二下学期期中考数学试题
名校
解题方法
3 . 2022年10月9日7时43分,我国在酒泉卫星发射中心使用长征二号丁型运载火箭,成功将先进天基太阳天文台“夸父一号”发射升空,卫星顺利进入预定轨道,发射任务取得圆满成功.该卫星是我国综合性太阳探测卫星,将聚焦太阳磁场、太阳耀斑和日冕物质抛射的观测,开启我国综合性太阳探测时代,实现我国天基太阳探测卫星跨越式突破.“夸父一号”随着地球绕太阳公转,其公转轨道可以看作是一个椭圆,若我们将太阳看做一个点,则太阳是这个椭圆的一个焦点,“夸父一号”离太阳的最远距离为15210万千米,最近距离为14710万千米,则“夸父一号”的公转轨道的离心率为( )
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-02-23更新
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338次组卷
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7卷引用:广东省梅州市五校(五校虎山中学、平远中学、水寨中学、丰顺中学、梅州中学联考)2022-2023学年高二下学期期中考数学试题
4 . 已知点
是圆
上的动点,过点
作
轴的垂线段
,
为垂足,点
满足
,当点
运动时,设点
的轨迹为曲线
.
(1)求曲线
的方程;
(2)证明:存在圆心在原点的圆,使得该圆的任意一条切线与曲线
恒有两个交点
、
,且
(
为坐标原点),并求出该圆的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79382ba44ba669b5d43fdd5427adf16c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bef975a3dfc9d7f72d4472918490f875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)证明:存在圆心在原点的圆,使得该圆的任意一条切线与曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/3825ccc273ef9a672a606432d165b866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
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解题方法
5 . 已知动点
与点
的距离与其到直线
的距离相等.
(1)求动点
的轨迹方程;
(2)求点
与点
的距离的最小值,并指出此时
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be92f0e0012a7696c78e3e00513edefd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c3d2ff5ee566fcc1b69c65712a661.png)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/109a293cef44f23e86e22c1a4cfcbbe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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6 . 已知椭圆
的左、右焦点分别为点
、
,若椭圆上顶点为点
,且
为等腰直角三角形,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2896b3ce660e64e4c47f47819ba66bf6.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3824d9d42a2bd926fbd8f99a2c37eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
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2023-02-10更新
|
728次组卷
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5卷引用:广东省梅州市2022-2023学年高二上学期期末数学试题
广东省梅州市2022-2023学年高二上学期期末数学试题(已下线)专题23 椭圆的简单几何性质10种常见考法归类(1)(已下线)专题20 椭圆-2浙江省嘉兴市桐乡第一中学2023届高三下学期5月适应性测试数学试题(已下线)第05讲 椭圆及其性质(八大题型)(讲义)-4
7 . 如图,棱长为2的正方体
中,点
是底面
上的动点,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9545017eee79a71befee621b52c8cae6.png)
,下列结论正确的有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/11/af6f32b6-f4fd-4785-836f-40b7d0642c56.png?resizew=185)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9545017eee79a71befee621b52c8cae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cdc8c55959c068b5e2f1906fde09036.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/11/af6f32b6-f4fd-4785-836f-40b7d0642c56.png?resizew=185)
A.当![]() ![]() |
B.当![]() ![]() ![]() ![]() |
C.当![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
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8 . 已知双曲线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5bbb709522dba9425a6b45ee671298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e60e3a9c8c31ba3f0a3231d86499c40c.png)
的渐近线方程为
,则该双曲线的方程可以是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5bbb709522dba9425a6b45ee671298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e60e3a9c8c31ba3f0a3231d86499c40c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24489ab4d0856fbf8512622ab4b7e28e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dec7f6309562276a49560c17c98dedf.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
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解题方法
9 . 已知
是椭圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5bbb709522dba9425a6b45ee671298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
的一个焦点,若椭圆上存在关于原点对称的
,
两点满足
,则椭圆
离心率的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5bbb709522dba9425a6b45ee671298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f82eb4ba631d0f50d848aa6e576b379.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/589e83d3bba7d5ef10eec745b9ebf7ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2023-02-10更新
|
748次组卷
|
4卷引用:广东省梅州市2022-2023学年高二上学期期末数学试题
广东省梅州市2022-2023学年高二上学期期末数学试题(已下线)模块四 专题5 重组综合练(广东)期末终极研习室(高二人教A版)安徽省合肥市第九中学2023-2024学年高二上学期第二次单元检测数学试题(已下线)专题22 圆锥曲线的离心率问题-3
解题方法
10 . 某学习小组研究一种如图1所示的卫星接收天线,发现其轴截面为图2所示的抛物线形,在轴面内的卫星信号波束呈近似平行的状态射入,经反射聚焦到焦点
处,已知卫星接收天线的口径(直径)为
,深度为
,则该卫星接收天线轴截面所在的抛物线的焦点到顶点的距离为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/11/ce2b483c-aee5-4aed-9b29-dcf9ebae1957.png?resizew=263)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b29f0b22a47dfc475b82f641b86c801.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17b514ca29d7d7df3ccc349e7e93e5fc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/11/ce2b483c-aee5-4aed-9b29-dcf9ebae1957.png?resizew=263)
A.![]() | B.![]() | C.![]() | D.![]() |
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