组卷网>知识点选题>坐标公式法求平面向量的模
显示答案
| 共计 573 道试题
多选题 | 一般(0.65) | 2021·浙江高一期末
1 . 如图,等边eqId64b9b599fdb6481e9f8d9a94c102300b的边长为2,点BC分别在x轴正半轴和y轴正半轴上滑动,点A在线段eqId0627be51821d4be7b3e024a354815d64的右上方则(   )
说明: figure
A.eqId0726155afd5641989cf28239a28668e3有最大值3B.eqIdf56ee159d1c44aad90c80c458accbd29有最大值3
C.eqId32e780c3be404c08bab54b1b4c066665有最小值无最大值D.eqId56febe50fa9a42bf8e5de2e77df8f191无最大值也无最小值
更新:2021/06/16组卷:4
多选题 | 较易(0.85) | 2021·浙江高一期末
2 . 设向量eqIdea710fd4fa6d45c88b41cca55c8713b3,则(   )
A.eqId33601d04dd7b4d389715372bc199e0e6B.eqId03ef8600520945628766af5786ccec48
C.与向量eqIdf087b35a5011425daaafbf14a5e61064方向相同的单位向量的坐标为eqIddd5164f1db294739877e1a6e73631d46D.向量eqId5f16eb46594d47b58ffc973b5cc2dd0d在向量eqIdf087b35a5011425daaafbf14a5e61064上的投影向量坐标为eqId9c4f56b428bd4a5c947d36cfcedceddf
更新:2021/06/13组卷:0
4 . 已知向量eqId5c50472cc7c94b08ae7fcffb0ae86811eqIddff087a46bb6474cac0c4678f2c57cf5,若eqId98e0544119ef4df687aaa07aa5066999eqId26d0383ebc3f44c2984e80b88390a5f5垂直,则eqId00aa9f07aeb24c47b5b5754ec8157194的值为______.
5 . 已知向量eqIde1bb9e9046b14b0087c1289b23a2b53aeqId9fa17069d470487891a92c0ef2e09493,则eqId25b9116216b546ea90c6bf9ae3a388faeqId042fbfb868334efa9e60cd2cc4d81b29上的投影向量的坐标为______
8 . 已知eqIdf087b35a5011425daaafbf14a5e61064eqId5f16eb46594d47b58ffc973b5cc2dd0d是相互垂直的单位向量,与eqIdf087b35a5011425daaafbf14a5e61064eqId5f16eb46594d47b58ffc973b5cc2dd0d共面的向量c满足eqId9e6386fa896e4940a13afb350158845f,则eqIdfe72fe3d77e34f6e89f18aeb25a9a009的模为(   )
A.eqId317ed84d205b4156847380f7e9f38b08B.2C.eqId2644c4fd7d684e75ae5ed93cb3581244D.eqId7bcd573cee334383ad72cc4b179fcfb3
9 . 设向量eqIdb9acc4bc24f640f19e18649c93edac34eqIde909f230cf3040cbb5bd5e88e7a3032e是与eqId3d906e5d3e694363af29a999ce4871a6方向相反的单位向量,则eqIde909f230cf3040cbb5bd5e88e7a3032e的坐标为__________.
10 . 在等腰梯形eqId5ce7a06ae7a34393b92b5277978ac014中,eqIdce6f97e7da6d4498b480e6ab85254753eqIdb97f0c5bc3bc403b9ebf4b7023fa47cdeqIdbedf755e0fdb4d078d6859360706b163是腰eqId8a76bbe21fb549e3a9c2038d58c7a3d8上的动点,则eqId4c0bdfe3671344afa83cc5442cabcdb6的最小值为(   )
A.eqId15d2088f003c4aad9745c07a7616191bB.3C.eqId014f19d55bcc423a9e0a3a8b042509b0D.eqId3e88152e02454dc9a27a89a2bfd2a05e
客服 视频 帮助 公众号 官方微信