已知向量
,
,若
,
,
,则
的值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9525cc7220141b548c9940a95a3abce2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcedd5a0a6a416627d352564e8aac50e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e708be069ecbfa5b18d36b40d0b8ccec.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c16ae91fe7afb3962b582bc766ff58b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bfebf965bf19e7088b2077c6b9bc1c4.png)
2013·河南信阳·一模 查看更多[2]
更新时间:2016-12-02 07:34:51
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