已知
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e304cf018473bb54edb166fcd6502b.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c84c2028f9a69531fc64dccad926e3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f03e6ba967fd8ef8c6481457345a4c6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e304cf018473bb54edb166fcd6502b.png)
更新时间:2017-10-26 14:21:19
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解题方法
【推荐2】已知
,
,则
的一个取值 为_________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa5fafd37a5dc81343e00ef7598c521d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96a24b53f8f3ec4cc40ad5cb44d89070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3fb5429a261321ac5eae3e158d2c45b.png)
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