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首页>高中数学综合库>平面向量>平面向量的数量积>数量积的坐标表示>数量积的坐标表示
题型:单选题 难度:0.85 引用次数:74 更新时间:2020/6/28 23:17:40 题号:8889084
eqId2efda802d5534f6d92d9f8af7aaec28b为坐标原点,复数eqIdd0b9878136144f8e80351c67e24d3878在复平面内对应的点分别为PQ,则下列结论中不一定正确的是(   )
A.eqId0f8af5d8b6da4c19be95a19818278c6dB.eqId64df8b2d19eb4e1cbe20d5c228caa734
C.eqId2fe12c05d2314979ad893497b1735934D.eqId5b8793369fb04cc29802c43dfa27d9e8

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【推荐1】已知,eqIda8a534a5056f45668ee73894e539efc5,若eqId4dd995e629fb48df9f8b066eb030b902,且eqId81445f4150214387ab659f0b08234526,则eqId4a86957f11fb44d297dbada33829ae96(   )
A.6B.7C.9D.12
更新:2020/04/05难度:0.85题型:单选题组卷:145
【推荐2】已知eqIdf5ea8f7fdd754496a1d0f8a77a0d9a2eeqIdeeb3dbddfa5e462cbb44ae547c91fff5,则eqId2b6ce0671dd34a88b84bc2333a710f07(   )
A.1B.2C.eqIda2a0ce3781fa4c26b624f5966b7dee44D.3
更新:2020/03/08难度:0.85题型:单选题组卷:41
【推荐3】已知eqId0c036ade43c5433697e0eee045c7cc52eqIdcf2212f8874f451e81c9cf8907f662fb,则eqIdbf80e33f8af0497793eeb1eb2a0e416eeqId26d0383ebc3f44c2984e80b88390a5f5方向上的投影为(   )
A.eqId15d94ae81f1a4ba1b398fcb78c78d372B.eqId49b7b111d23b44a9990c2312dc3b7ed9C.eqIdea491c3408284d46a85ac4b9b8f0ce01D.eqId2411e237a6024ba5812575d3840e3781
更新:2020/06/16难度:0.85题型:单选题组卷:223