已知平面向量
,
,设
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88449ead0e93ab8cfc34b2ddcb16be5b.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6569e50f43b3d8645652ecc13b62066e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eddbbab37f208b0cbbd5caa08840490.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1ecead4b5ea4e2a4fae78bbda2c5479.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88449ead0e93ab8cfc34b2ddcb16be5b.png)
2021·湖南长沙·模拟预测 查看更多[2]
更新时间:2021-05-20 22:49:53
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