1 . 化简:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d79e446240f2ed35543ffd2abc05fa56.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d79e446240f2ed35543ffd2abc05fa56.png)
您最近一年使用:0次
2019-11-10更新
|
155次组卷
|
4卷引用:沪教版 高二年级第一学期 领航者 第八章 附录3 实数与向量的乘积
解题方法
2 . 已知在
中,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dd24f6a4dfe1aa829d9a2f2546c42c2.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d12f42d51c60ff5144fb7a9284e3d97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63f486efa7d3188f6796418944394d68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dd24f6a4dfe1aa829d9a2f2546c42c2.png)
您最近一年使用:0次
名校
3 . 在平行四边形
中,若
,则四边形
是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e06bfd6b5562a0bfb1404feca05462a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
2019-10-11更新
|
358次组卷
|
2卷引用:人教A版 全能练习 必修4 第二章 第二节 向量加减法运算及其几何意义
4 . 已知
是直角三角形且
,则在下列结论中正确的是__________ (写出所有正确结论的序号)
①
;②
;
③
;④
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f89deb952f57f4b3fa4887b098b7b91.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8db758effaf070ccb32d48532ae0306.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b699c52ba64a088fa72719a02abdefd.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fc0d7c2274141602d172528458afc46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa07bd389a95994e02cef6743199f75e.png)
您最近一年使用:0次
名校
5 . 在
中,给出如下命题:
①
是
所在平面内一定点,且满足
,则
是
的垂心;
②
是
所在平面内一定点,动点
满足
,
,则动点
一定过
的重心;
③
是
内一定点,且
,则
;
④若
且
,则
为等边三角形,
其中正确的命题为_____ (将所有正确命题的序号都填上)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec09a159d6760fca8ae5966bf97b4e49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfd38fab7ea8a640f82ff3d2342dd6d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddf6ba33629128692e0b8c23100415a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a05a266de6e73486d1c04003321c26ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f8cfeb3d9af75a2c2a84701d4f0bb87.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5448c2bab910f9a914de6e9609a35c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2ec4e396cae9d36d48acecbedac434b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
其中正确的命题为
您最近一年使用:0次
2019-09-11更新
|
774次组卷
|
2卷引用:四川省自贡市2018-2019学年高一下学期期末考试数学(理)试题
6 . 化简:
+![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aab092d124d51a236fa5e2af7400fdad.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91480dc7ccaa64eecbd60abe3975c713.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aab092d124d51a236fa5e2af7400fdad.png)
您最近一年使用:0次
7 . 化简
的结果是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f1732f45c808f327e2e6176372747f9.png)
您最近一年使用:0次
2019-05-17更新
|
699次组卷
|
4卷引用:步步高高一数学暑假作业:作业23 平面向量的线性运算
步步高高一数学暑假作业:作业23 平面向量的线性运算北京市房山中学2021-2022学年高一年级4月月考数学试题(已下线)6.2.2平面向量的运算—加法 减法-【师说智慧课堂】课后训练(人教A版2019)黑龙江省鸡西市第四中学2021-2022学年高一下学期期中考试数学试题
2019高一下·全国·专题练习
8 . 如图,在正六边形ABCDEF中,已知
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f7e5c8ad04ceea480e413ef6a6a953b.png)
___________ (用
与
表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ee72ce4f36a71e410d36eba1fb97037.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b01074b444268ca3831da1cd068fe3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f7e5c8ad04ceea480e413ef6a6a953b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8c308ea87b699ee1dcb879a568899de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358d896d9eab84c6695ddc25196e6857.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/7/0b3a7b17-5f7e-416e-8616-6b624256881b.png?resizew=128)
您最近一年使用:0次
9 . 在矩形
中,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/426c0c477acfc5d06ba06c5a6403ad7b.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9e8819b77961ca663c46122893f9f46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f81659f6dbc9032db25d2e1a81e2db6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/426c0c477acfc5d06ba06c5a6403ad7b.png)
您最近一年使用:0次
2019-03-21更新
|
1232次组卷
|
4卷引用:【市级联考】河南省新乡市2019届高三下学期第二次模拟考试数学(文科)试题
【市级联考】河南省新乡市2019届高三下学期第二次模拟考试数学(文科)试题(已下线)2019年9月15日 《每日一题》2020年高考文数一轮复习-每周一测安徽省六安市第一中学2018-2019学年高一下学期第二次段考数学(理)试题(已下线)9.2.1 向量的加减法 2020-2021学年高一数学同步课堂帮帮帮(苏教版2019必修第二册)
10 . 若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b493776d9f6b1cad3e38a4722697493.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
您最近一年使用:0次