已知向量
,
,
,且
,则实数
的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4421dd284d462c2bc70d0386ea722163.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc24527eba6eb84b9544ad9d76d832b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b22d82c3c0bf3c58752e92a2252954ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2d18851f37150a19abdb2cb21b3654f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
更新时间:2021-09-13 22:42:14
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