名校
解题方法
1 . 在中,角
所对的边分别为
是
内的一点,且
.
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18c61146a4a82d2ad1cd55429dc40398.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
您最近一年使用:0次
2023-07-05更新
|
388次组卷
|
4卷引用:山西省大同市2022-2023学年高一下学期期中数学试题
解题方法
2 . 在四边形
中,
,
,
,其中
,
为不共线的向量.
(1)判断四边形
的形状,并给出证明;
(2)若
,
,
与
的夹角为
,
为
中点,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45510ffd1b1345b17113a03dd024fb3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77c8d07848fc68609f0b09c027fcdf8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf61e4ba94f6a83192783222e157864b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e163480714acc9dae5005cac65d217d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c37564ec4e9e92485f1769e8ffaac31d.png)
(1)判断四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88c64ada896a9440a6fb1271b7b3d111.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5272c86de961c57ae25e03c64a882c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e163480714acc9dae5005cac65d217d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c37564ec4e9e92485f1769e8ffaac31d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edabae47b9b9df627aaa281ca0f4e71a.png)
您最近一年使用:0次
2023-07-16更新
|
840次组卷
|
12卷引用:福建省厦门市2022-2023学年高一下学期期末质量检测数学试题
福建省厦门市2022-2023学年高一下学期期末质量检测数学试题6.4.1平面几何中的向量方法练习(已下线)专题04 平面向量的应用 (1)-【寒假自学课】(人教A版2019)(已下线)专题07 向量的应用-【寒假自学课】(苏教版2019)(已下线)专题6.5 平面向量的应用-举一反三系列(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【第三课】“上好三节课,做好三套题“高中数学素养晋级之路(已下线)专题1.6 平面向量在几何和物理中的应用-重难点突破及混淆易错规避(人教A版2019必修第二册)(已下线)9.4 向量应用-【帮课堂】(苏教版2019必修第二册)(已下线)模块一 专题3 平面向量的应用(讲)(已下线)模块一专题3 《平面向量的应用》 【讲】(苏教版)(已下线)模块一 专题6 解三角形【讲】人教B版(已下线)高一下学期期末复习解答题压轴题二十四大题型专练(1)-举一反三系列(人教A版2019必修第二册)
3 . 已知点
,点
为一次函数
图象上的一个动点.
(1)用含
的代数式表示
;
(2)求证:
恒为锐角;
(3)若四边形
为菱形,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52c2773896cd546fb3b840a2604d3592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8701e0cce437edc830438b4fe6277d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e6e15daf7b14dbff32c390f4984dcfb.png)
(1)用含
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6983a471f24a61ef9ba49b814bf994c.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb686e4f5e3938575bc547e849d5513f.png)
(3)若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/712d9d9e29645c1df6ae23125b4aa1cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2d68310668412a7fe7a6a063214370c.png)
您最近一年使用:0次
名校
解题方法
4 . 已知椭圆
经过点
,且离心率为
.
(1)求椭圆的方程;
(2)设椭圆的左顶点为
,直线
与椭圆交于
,
两点,求证:不论
取何值,
的大小为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02f718d4840a2fda33a6d38a8c121fc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
(1)求椭圆的方程;
(2)设椭圆的左顶点为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b43637e53ef106a872c82935e4e1874.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/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2f9c3b578fc0598d5ec6c79404c6cc2.png)
您最近一年使用:0次
5 . 在直角坐标平面
上的一列点
,
,…,
,…,简记为
.若由
构成的数列
满足
,
,2,…,其
,则称
为“
点列”.
(1)判断
,
,
,…,
,是否为“
点列”,并说明理由;
(2)判断
,
,
,…,
…是否为“
点列”,请说明理由,并求出此时列
的前
项和
.
(3)若
为“
点列”,且点
在
的右上方,任取其中连续三点
,
,
,判断
的形状(锐角三角形、直角三角形、钝角三角形),并予以证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b83f2d2af303ccdae516116fd090f24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b4a57db9c5fae6f4276ff5a5b1044b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79e3a3f487f4d58eeb6f7f1a368da3d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/621604766ddd141c86e37da5e71aef26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abccd5df6c8677f7df360fe1df8dff28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d136863d6beae5098ba2150334ddf235.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87b351f16728b0023fd63678f8103c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e7cec07bda4ce25be78389d554134c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/621604766ddd141c86e37da5e71aef26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f96a5581bc5da9c4214cd384a45dca09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04529472264cdcd72ac29ead983df370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/991b8e477ae57fdd98f606c268af9c92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7025330f247464948d04e82d284be8b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f96a5581bc5da9c4214cd384a45dca09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77c58459115059a84a495b00395d2728.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/013ba39cf8c6f95daeeec21a501a5cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0304008147bb4650b93fe065481ed303.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7f2c72ab559a0615db4c51327b78d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a8e78d874c32b261512cd9532fb1090.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a4ab3a5142348c3397f821e22ece09e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6edc135bb869e8e8dd68b711d147e368.png)
您最近一年使用:0次
名校
解题方法
6 . 已知直线
经过抛物线
的焦点F,且与抛物线交于
两点,点
为坐标原点.
(1)证明:
为钝角.
(2)若
的面积为
,求直线
的方程;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42102c1c07562853219ca5918803a27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
解题方法
7 . 已知
是等腰直角三角形,
,
是
边的中点,
,垂足为
,延长
交
于点
,连接
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f96d9e134e1820d80612be1bc590993e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c897a54f2e36bc4b52fba74b41c89d2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d79fa845ebcac7fbdaf52df082445799.png)
您最近一年使用:0次
2019-10-09更新
|
488次组卷
|
7卷引用: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(2)
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(2)人教A版 必杀技 第二章 平面向量 第二章全章训练人教A版 全能练习 必修4 第二章 第五节 2.5.1 平面几何中的向量方法(已下线)6.4.1 平面向量在几何和物理中的运用(精练)-2020-2021学年高一数学一隅三反系列(人教A版2019必修第二册)广东省连平县忠信中学2020-2021学年高一下学期段考(一)数学试题(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)专题6.5 平面向量的应用-举一反三系列
名校
8 . 已知椭圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
的短轴长等于
,离心率为
,
、
分别为椭圆
的上、下顶点.
(Ⅰ)求椭圆
的方程;
(Ⅱ)设
为直线
不同于点
的任意一点,若直线
、
分别与椭圆相交于异于
、
的点
、
,证明:
恒为钝角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fb223b8777ab973970491bf0dcc6806.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.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/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅰ)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de72a5190834f5dbe895596656c038b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1156a8b29780810bd472f6d9e11b0e39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358c69b4f6c350c35d19d33c69f2a2a8.png)
您最近一年使用:0次
9 . 已知椭圆
的左、右顶点分别是点A,B,右焦点是F,过F点作直线与长轴垂直,与椭圆交于P,Q两点.
(1)若∠PBF=60°,求椭圆的离心率;
(2)求证:∠APB一定为钝角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/665489f3abfc49ce2f41989bc4ce2ba2.png)
(1)若∠PBF=60°,求椭圆的离心率;
(2)求证:∠APB一定为钝角.
您最近一年使用:0次