在
中,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ce681300279160aff48ec7f24b5e1df.png)
21-22高一·湖南·课后作业 查看更多[2]
更新时间:2022-02-22 11:29:24
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相似题推荐
解答题-证明题
|
容易
(0.94)
【推荐2】如图所示,在平行四边形
中,
,
分别是
,
的中点.
共线的向量;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0eca3584ada1ff9ee02e178265a8522.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e890ccc3226727562188e8a463c7e1b0.png)
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解答题-作图题
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【推荐1】如图,已知
和点P,请以点P为起点,分别在图中作出下列向量:
![](https://img.xkw.com/dksih/QBM/2021/12/1/2863251251535872/2863383243366400/STEM/c44cf37acf2348b5bfa5eb8c28988567.png?resizew=238)
(1)与
相等的向量
;
(2)与
互为相反向量的向量
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/2021/12/1/2863251251535872/2863383243366400/STEM/c44cf37acf2348b5bfa5eb8c28988567.png?resizew=238)
(1)与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1fe2d802f2b37e7db198c5a3c1df9a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ecbddb163b8a6c0a96a230f66e840c.png)
(2)与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1da92a2fc2ce861e82f7192fe4e648f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27fbc0dc5ad841432589cdb5b6e1376a.png)
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解答题-问答题
|
容易
(0.94)
【推荐2】如图,设O是正六边形
的中心,
(2)分别写出图中与
,
,
相等的向量.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
(2)分别写出图中与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dfde0038de382d2be9701cea23ef7eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/329fdf7d989f77a32ca9e0361a9cc956.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4407c0b2e5febf70f610bd00067f105.png)
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解答题-问答题
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【推荐3】如图,
的对角线AC和BD交于点O,设
,
,试用基底
,
表示
和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48ac5f94e56c4679a32df00c5bb57964.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63666d7cc3b50ada407f904098e163c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a92e6eba8dab638fd66831cd3a0b6d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/427fa45527d0ce469bfd060bf6f991f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1da92a2fc2ce861e82f7192fe4e648f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66a584f11ff7ac3cfd1014f20187b196.png)
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解答题-问答题
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【推荐1】(1)如图(1),在
中,计算
;
(2)如图(2),在四边形ABCD中,计算
;
(3)如图(3),在n边形
中,
证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5721dc13721ae965015a029cfbb41708.png)
(2)如图(2),在四边形ABCD中,计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd89fe6c385106b5fe315fd5b222af14.png)
(3)如图(3),在n边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/613e0062111a4337e4f38d0763fac544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c82bfabb76b6b4307207cf2fb41c6ca.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/91884461-6d8e-483a-b03e-2f94177bb77a.png?resizew=400)
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解答题-问答题
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(0.94)
【推荐2】如图,在五边形ABCDE中,若四边形ACDE是平行四边形,且
,
,
,试用
表示向量
,
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1887a1513aee097a396e99d7399c4e22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4851948ee018b0cf4e52b04f738f3f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14a98b34fffe24cc961ef4c62dccd3dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c38fe2c71e008615306cd00dd26ac34d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d86ed5700cde027ca83174d9c10292.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c6cbb6f308715ba2e58c11e61dc7d61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91480dc7ccaa64eecbd60abe3975c713.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/51bfe14b-e058-41d8-bdb8-1a86597e76a8.png?resizew=150)
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