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
解题方法
2 . 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)
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名校
3 . 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)
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4 . 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)
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名校
5 . 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)
您最近一年使用:0次
2023-05-21更新
|
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
名校
解题方法
6 . 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)
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2023-08-11更新
|
738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)
2023高一·全国·专题练习
名校
7 . 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)
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2023高三·全国·专题练习
8 . 如图,若点A,B,C互不重合,O是A,B,C三点所在平面上的任意一点,且
,证明:A,B,C三点共线是
的充要条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/450743dbe1916012643039cd87a72263.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5558c083d34cbb0a58d3ce1dc6f5778e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/16/c9038f43-93dd-43d3-afb3-d30c44da1ccd.png?resizew=116)
您最近一年使用:0次
解题方法
9 . 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
|
848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)
名校
10 . 在
中,已知
,
,P在线段BC上,且
,Q是边AB(含端点)上的动点;
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/2/67880cdc-effe-40b8-8d2c-65d948778ef9.png?resizew=151)
(1)若
,O是AP中点,求证:C,O,Q三点共线.
(2)若存在点Q使得
,求
的取值范围及
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89f8c7c5dad20d1ac791b5aaad95c31b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/2/67880cdc-effe-40b8-8d2c-65d948778ef9.png?resizew=151)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad5e54f557d62b594cc86f80b4bedf1c.png)
(2)若存在点Q使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55711dc230f1ca9e948288d5a2cc793c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5cb63aeea0b37799404c8fec092b21d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee0e611318ee3f01b95ba8f2188cb8bc.png)
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