1 . 如图所示,在
中,点D是边BC的中点,点E是线段AD靠近A的三等分点.过点E的直线与边AB,AC分别交于点P,Q.设
,
,其中
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/17/ccc713c7-b979-4e0c-bd2a-6e8ba8efbcd1.png?resizew=187)
(1)试用
与
表示
,
;
(2)求证:
为定值,并求此定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a96f93c74e45318dab2ef44893ad687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e20b752572a7e0ab2e32e4a93a8c8f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c98c0ec4c99989333faa478a946985.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/17/ccc713c7-b979-4e0c-bd2a-6e8ba8efbcd1.png?resizew=187)
(1)试用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5f1b06a56fc382feed28e01f1ad102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304a7f07db2ec637baadf8f0ab91c85c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89265cbe3abc6b966ce8967fead448b.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febf7413b35cf2889fdb57a6b519087c.png)
您最近一年使用:0次
2023-04-15更新
|
746次组卷
|
2卷引用:福建省福州市福清市高中联合体2022-2023学年高一下学期期中考试数学试题
名校
解题方法
2 . 如图,在
中,
.设
.
表示
;
(2)若
为
内部一点,且
.求证:
三点共线,并指明点
的具体位置.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07d4a1e9b4ebe2b5e4490446e69bda3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03ba495e8f9fe02229a4248fdbfb4710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f270dd48cdb1d17c0e515d64667831.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e0e537e94f2920f6b77ff1e03fb68f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00465348fbb95387c7df2df7e6eb3894.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
2023-08-11更新
|
739次组卷
|
5卷引用:山东省泰安市新泰市第一中学东校2022-2023学年高一下学期3月月考数学试题
山东省泰安市新泰市第一中学东校2022-2023学年高一下学期3月月考数学试题江西省萍乡市安源中学2022-2023学年高一下学期期末质量检测数学试题(已下线)第04讲 6.2.3向量的数乘运算(1)-【帮课堂】(人教A版2019必修第二册)(已下线)6.2.3 向量的数乘运算(分层作业)-【上好课】(已下线)专题3 平面向量的应用(期中研习室)
解题方法
3 . 如图所示,在
中,P在线段BC上,满足
,O是线段AP的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/2/b85c66a0-3ff7-4d24-8740-6bbb38cb3501.png?resizew=164)
(1)过点O的直线与边AB,AC分别交于点E,F,设
,
.
①求证
为定值;
②设
的面积为
,
的面积为
,求
的最小值.
(2)若
是边长为1的正三角形,且
,
…
…
是线段BC的n等分点,
,其中
,n、
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b8e3e5d6bcb51f5a2317501feb73ecd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/2/b85c66a0-3ff7-4d24-8740-6bbb38cb3501.png?resizew=164)
(1)过点O的直线与边AB,AC分别交于点E,F,设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61cb96903ddcfe069075ef87760ff6a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e12eb1c1546ff4ae9878ffa87136c05.png)
①求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08a58464a16629aa18aa99187cb0d398.png)
②设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235f0a6fb218d28383e6f27f2df1f50f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf99487d7860d017c0747ff966edfd77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eb90a2118db1e9945d7b5997bf2482a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/174f963c931b97d109f7f4227a7d453f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36d1a406338067cfdeafaf575b2fbcdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad52924df9291d5d191d18e09374ee1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dece4d48b8710a86f23d979b1dbaa541.png)
您最近一年使用:0次
2023高三·全国·专题练习
4 . 如图,在
中,
为边
的中线,
,过点P作直线分别交边AB,AC于点M,N,且
,
,其中
,
.证明:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/853f7d1ee052454b764e7926390d0cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbc6bd78eaf4e6b4a904b9850392fcf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/323f0075c96990706da0ba1d81c91ffa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be362dec96173f246ff747264007817.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c98c0ec4c99989333faa478a946985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/587b693b82241eb9c32cdbb96c209f33.png)
![](https://img.xkw.com/dksih/QBM/2023/8/9/3299192160231424/3323397560336384/STEM/839bc2aa750b4a20b6f59172144a0fbb.png?resizew=129)
您最近一年使用:0次
解题方法
5 . 已知
,如图,在
中,点
满足
,
是线段
上一点,
,点
为
的中点,且
三点共线.
的最小值.
(2)若点
满足
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22d812643e080d4d447fab7fe2ae2646.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70fa908112806dc176b8abdc3b3aaa92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5695771008b97a5fffe6eb540d54c2f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16fc30fe92ea3aa9a6e2612967c34a82.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/8e9ba90b720518d70eb4d365b2afaeb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fba4700b8f86218dc3e46bbf241dd7a.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3daf7bdfa5ceea443c48b67024b67111.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34222f515ad31e48cf84309c013ad41a.png)
您最近一年使用:0次
2023-07-27更新
|
701次组卷
|
11卷引用:河北省保定市六校联盟2022-2023学年高一下学期期中联考数学试题
河北省保定市六校联盟2022-2023学年高一下学期期中联考数学试题(已下线)第二节 平面向量基本定理及坐标表示 A素养养成卷(已下线)专题07 向量的应用-【寒假自学课】(苏教版2019)(已下线)6.3.1平面向量基本定理-高频考点通关与解题策略(人教A版2019必修第二册)(已下线)6.2.3 向量的数乘运算-高频考点通关与解题策略(人教A版2019必修第二册)(已下线)第06讲 6.3.1平面向量基本定理-【帮课堂】(人教A版2019必修第二册)(已下线)3.2 空间向量基本定理(五大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)(已下线)6.4.1 平面几何中的向量方法-同步题型分类归纳讲与练(人教A版2019必修第二册)(已下线)6.3.1 平面向量基本定理——课后作业(巩固版)(已下线)6.2.3 向量的数乘运算——课后作业(巩固版)内蒙古呼和浩特市回民区2023-2024学年高一下学期期中考试数学试题
2023高一·全国·专题练习
名校
6 . 如图:在
中,
,
,
与
交于点
,设
.
(1)若
,求
,
的值;
(2)在线段
上取一点
,线段
上取一点
,使得
过点
,设
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/541f0de8478633dd6de0b96653380351.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03d24514cfd797f21116cacd6d636df4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/211429ce394297f664f6b8e16edec714.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/26/702bdf00-2322-4219-8963-07aa0db519f2.png?resizew=257)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db6473fc206d85aa015b2547317ada4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07503227ec732954dc608f62a56b5ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c3ba58abc9738c443230a8bc0178ab5.png)
您最近一年使用:0次
名校
7 . 如图,在△ABC中,三内角A,B,C对应的边分别为a,b,c,点E是边AB的中点,点D是边AC上一点,BD,CE相交于点P,且
.
(1)若
,求实数
的值;
(2)若
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/270b6402b10f97389b63506859cc9744.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/30/d930428c-8ef5-46df-9f7e-65d3d48fb5c2.png?resizew=179)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8187ab01a959abdff6f9da304143f238.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e8775a682511e43fd09fa38e4e4d5d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72264e1962289ff8cc3caf451b34bab1.png)
您最近一年使用:0次
8 . 如图,在
中,已知
,
,
,
.
,证明:A,F,E三点共线;
(2)若AE,BD交于点F,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1a106e4f1a3d3f9efddb4dc4c63664.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8faedb1dcf2637dbf0be0a9d40f09384.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7b9d8a08fc52c31cc1a7f527d18b55c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f386f5b56b07b96f2600da1be15414a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8534bce8cc699d019f0f6dad1295bb40.png)
(2)若AE,BD交于点F,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a91801804c245efb2485a6661c0f2f34.png)
您最近一年使用:0次
名校
9 . 在
中,点
分别在边
和边
上,且
,
,
交
于点
,设
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/13/86a68868-d406-49ff-b982-39d246a4c1c7.png?resizew=153)
(1)试用
,
表示
;
(2)在边
上有点
,使得
,求证:
三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c59802bde1dc59ba9000157b08463b2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11fbc3a1f1e848cf1349b9327be8607d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c71813d6916acdd4a80d8d270ab414a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88f9e35b2d86b09076806917cbedc3c9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/13/86a68868-d406-49ff-b982-39d246a4c1c7.png?resizew=153)
(1)试用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/471ac0f42d01c6d6e094b63628586e4d.png)
(2)在边
![](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/dd0087924c5825b480965daabfeea630.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bfc59d1de5055c3939295ec953ef3a8.png)
您最近一年使用:0次
2023-05-11更新
|
804次组卷
|
3卷引用:河南省实验中学2022-2023学年高一下学期期中数学试题
名校
10 . 如图所示,在
中,
,
,
,
.
(1)试用向量
,
来表示
,
;
(2)若
,求证:D,O,N三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f3adc4ed291596abf3bb93ae7a075d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e984585ddf28c039219afcebf229de7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6526c7fe1904af8366a2845ad441540c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a814303dd703d9068b364f317c14d96e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/10/55136a45-6e5e-48fd-9183-2ac86bfb3739.png?resizew=154)
(1)试用向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9465e4f69188514f560f27449bddfe6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe6d728b430549f00bb9c0a7bf8bf7d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f326c6db10529253acdf12b691d19ba.png)
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2023-05-21更新
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452次组卷
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3卷引用:安徽省皖北县中联盟2022-2023学年高一下学期5月联考数学试题