1 . 以坐标原点为对称中心,坐标轴为对称轴的椭圆过点
.
(1)求椭圆的方程.
(2)设
是椭圆上一点(异于
),直线
与
轴分别交于
两点.证明在
轴上存在两点
,使得
是定值,并求此定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3b351f66cf98455d42660520b5ff0c.png)
(1)求椭圆的方程.
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e7344dca1e40bf072371ddd5640111.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faf9f7adfb1276af4d84ce859e6b4247.png)
您最近一年使用:0次
2023-10-19更新
|
992次组卷
|
5卷引用:黄金卷04
名校
解题方法
2 . 设
是两个数列,
为直角坐标平面上的点.对
三点共线.
(1)求数列
的通项公式;
(2)若数列
满足:
,其中
是第三项为8, 公比为 4的等比数列. 求证: 点列
在同一条直线上;
(3)记数列
的前
项和分别为
和
,对任意自然数
,是否总存在与
相关的自然数
,使得
? 若存在,求出
与
的关系,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0914c295f572c98dd043d4f84268934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/424664fbdf13e37ff6322e530cc6144d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/621e2ada15a29e27e6810e63be80f55d.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04895834b89a3f581290e03994c20f06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad61168fd706984b2003d8e0e421c5cd.png)
(3)记数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0914c295f572c98dd043d4f84268934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a0d7559d8dfa8236ca9d4b1853fbdec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e6c00feaa470ac6b13a6d5fee720fe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b22290549d28036b3cf6c4276191bd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
解题方法
3 . 如图,在
中,点E为边
上一点,点F为线段
延长线上一点,且
,连接
交
于点D,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/909ea1dcb3ba3fe867772a46d111fe15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dacca19f76d406c300d549a5a35ce6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/02414b33-3ae7-4547-81ce-655db4d9996e.png?resizew=120)
您最近一年使用:0次
2021-10-15更新
|
577次组卷
|
6卷引用:9.4 向量的应用-【题型分类归纳】2022-2023学年高一数学同步讲与练(苏教版2019必修第二册)
(已下线)9.4 向量的应用-【题型分类归纳】2022-2023学年高一数学同步讲与练(苏教版2019必修第二册)(已下线)专题6.9 平面向量的应用(重难点题型精讲)-2022-2023学年高一数学举一反三系列(人教A版2019必修第二册)(已下线)6.4.1 平面几何中的向量方法(精讲)-【题型分类归纳】2022-2023学年高一数学同步讲与练(人教A版2019必修第二册)(已下线)6.4.1 平面几何中的向量方法-同步精品课堂(人教A版2019必修第二册)人教B版(2019) 必修第二册 学习帮手 第六章 6.3 平面向量线性运算的应用第10课时 课前 平面几何中的向量方法、向量在物理中的应用
4 . 如图,已知直角梯形
中,
,过点C作
于点E,M为
的中点.
;
(2)D,M,B三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2590a5a53ebdcd6400cc24d527d4139e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f913298f0fae9f55377a8deab9f099dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95a078495ba47076ccaa28b46f765d80.png)
(2)D,M,B三点共线.
您最近一年使用:0次
5 . 已知Rt△ABC中,∠C=90°,设AC=m,BC=n.
(1)若D为斜边AB的中点,求证:CD=
AB;
(2)在(1)的条件下,若E为CD的中点,连接AE并延长交BC于点,求AF的长(用m,n表示).
(1)若D为斜边AB的中点,求证:CD=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(2)在(1)的条件下,若E为CD的中点,连接AE并延长交BC于点,求AF的长(用m,n表示).
您最近一年使用:0次
2022-08-28更新
|
259次组卷
|
6卷引用:6.4.1平面几何中的向量方法(课件+作业)
(已下线)6.4.1平面几何中的向量方法(课件+作业)(已下线)6.4.1 平面几何中的向量方法(分层作业)-【上好课】2022-2023学年高一数学同步备课系列(人教A版2019必修第二册)(已下线)高一下期末真题精选(基础60题60个考点专练)(已下线)6.4.1平面几何中的向量方法+6.4.2向量在物理中的应用举例【第三练】“上好三节课,做好三套题“高中数学素养晋级之路高中数学人教A版必修4 第二章 平面向量 2.5.1 平面几何中的向量方法吉林省长春市农安县2021-2022学年高一下学期期末数学试题
名校
6 . 如图,在四边形
中,
为对角线
与
中点连线
的中点,
为平面上任意给定的一点.
![](https://img.xkw.com/dksih/QBM/2021/6/18/2745403371003904/2768546705989632/STEM/46cde7beb3864628b0df3a3de5e77c2e.png?resizew=93)
(1)求证:
;
(2)若
,
,
,
,点
在直线
上运动,当
在什么位置时,
取到最小值?
(3)在(2)的条件下,过
的直线分别交线段
、
于点
、
(不含端点),若
,
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/2021/6/18/2745403371003904/2768546705989632/STEM/46cde7beb3864628b0df3a3de5e77c2e.png?resizew=93)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5632cbd5252f07934ecdb6e6951246f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4a0816f8db1e1cad53f05b8dc1837ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ed8128329f973dff60d13e4039957b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7652bbae10722db2cf0458d9da4a54c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f82432e6351f381c0008e5bc6b545f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbc4a9a1594591b27b24998ea3f5a2e5.png)
(3)在(2)的条件下,过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da25790e5a2cc740b8a5ef8809dab3a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/660018ccbfd4abf386c30cad0f9ea8eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d27e62ba44cbfec6823ebc1f0c7457fb.png)
您最近一年使用:0次
2021-07-20更新
|
432次组卷
|
3卷引用:专题13 平面向量(练习)-2
解题方法
7 . 已知椭圆
:
的左、右焦点分别为
,
,左、右顶点分别为
,
,
,
.
(1)求椭圆
的方程.
(2)过
的直线与椭圆
交于
,
两点(均不与
,
重合),直线
与直线
交于
点,证明:
,
,
三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eed6b9540857e386651e191a0a5b5a98.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ff3b943231602fb40e676f45d2674e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70964b810dc1ed0cc62a07204877dbb4.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
您最近一年使用:0次
20-21高二上·江苏南通·期中
名校
解题方法
8 . 如图所示,椭圆
的离心率为
,其右准线方程为
,A、B分别为椭圆的左、右顶点,过点A、B作斜率分别为
、
,直线AM和直线BN分别与椭圆C交于点M,N(其中M在x轴上方,N在x轴下方).
(2)若直线MN恒过椭圆的左焦点
,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a4e50892b9adf55202f31f797bd0791.png)
(2)若直线MN恒过椭圆的左焦点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeb0c199b9c79aa2eea0537f01456c57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67351fe10fcfc3f9072eec4c60bfaaa5.png)
您最近一年使用:0次
2020-11-29更新
|
1558次组卷
|
10卷引用:专题29 圆锥曲线求定值七种类型大题100题-【千题百练】2022年新高考数学高频考点+题型专项千题百练(新高考适用)
(已下线)专题29 圆锥曲线求定值七种类型大题100题-【千题百练】2022年新高考数学高频考点+题型专项千题百练(新高考适用)(已下线)专题9-6 圆锥曲线大题:非韦达定理形式归类(已下线)专题8-2 圆锥曲线综合大题归类(讲+练)-1(已下线)江苏省南通市如皋市2020-2021学年高二上学期期中数学试题(已下线)江苏省南通市如皋市2020-2021学年高二上学期教学质量调研(二)数学试题江苏省南京航空航天大学附属高级中学2020-2021学年高三上学期12月阶段性测试数学试题宁夏吴忠市吴忠中学2022-2023学年高二上学期第三次月考数学(理)试题江苏省扬中市第二高级中学2021-2022学年高二上学期期末检测数学试题(二)(已下线)高二上学期期末模拟测试卷(基础版)-【冲刺满分】2023-2024学年高二数学重难点突破+分层训练同步精讲练(人教A版2019选择性必修第一册)河南省周口市川汇区周口恒大中学2023-2024学年高二下学期4月期中数学试题
9 . 已知O为坐标原点,
,
,
,求证:A,B,C三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfadd505a48a0ae56617d8f4da8faddd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d71d02aee3f86829a1024ff234c3958.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bda23d333fa8db54a1329fa88f5027c5.png)
您最近一年使用:0次