2024高一下·全国·专题练习
解题方法
1 . 如图,在平行四边形
中,
为
中点,
为
上靠近点
的三等分点,求证:
三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca66d526add7edada2dc7b85fdd15af2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdb61ed3470b586026bf689403352df5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/22/1e5e1ec3-5ff1-4955-b684-d36dce992f91.png?resizew=174)
您最近一年使用:0次
2023高一下·上海·专题练习
2 . 已知
中,过重心
的直线
交线段
于
,交线段
于
,连结
并延长交
于点
,设
的面积为
,
的面积为
,
.
表示
,并证明
为定值;
(2)求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4212a1a4e0970ff5d38e3a64d77d701e.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/31b896f635de0605dfb4a51af40a79c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/538c1a9e933bc1e29d785eeda9cd1abc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d27e62ba44cbfec6823ebc1f0c7457fb.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235f0a6fb218d28383e6f27f2df1f50f.png)
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3 . 已知
,
是两个不共线的向量.
(1)若
,
,
,证明:
三点共线;
(2)若向量
,
共线,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d45377b25f0803edac82b114e213087e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16cc4a25ee56365345ef1cd5fa31352a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a35fb46f8c3a49b3010e1f5390a2ec64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
(2)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/def10a4121a1a87d6c88e70db14cf67e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37763527bb0ff5b80217258a8e6e5531.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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4 . (1)在中,点
在
边上且
,以向量
,
为基底,表示向量
.
(2)已知空间向量,且
,
,
,求证:A、B、D三点共线.
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解题方法
5 . 在平面直角坐标系
中,已知点
.
.
②证明存在点
,使得
,并求出
的坐标.
(2)若点
在四边形
的四条边上运动,且
将四边形
分成周长相等的两部分,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbcb758bbbf6df1f2a44c0eb1d6496ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/811913e60f7404db685849378745773b.png)
②证明存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c8bc233a9902789a716fa0a31558dc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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名校
解题方法
6 . (1)化简
;
(2)若
,
,
,求证:A,B,D三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a72cbf97dd790dc0f65803740de58003.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02b752e2963191c90fd6f7bfe6a16938.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745411adb1dc2002eefbcb5f5d2d47ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0e8285404c0f4e98d046049260882c5.png)
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名校
解题方法
7 . 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
|
725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
8 . 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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9 . 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
|
745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
10 . 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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