(1)已知
,求证:
;
(2)已知非零实数
满足
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/956a5ba24ff8a07aadbad2cebb17e17b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe33042d6695ceed9fd3169592d1aead.png)
(2)已知非零实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f7d39d320e5dfcf4cd5cf86955b7b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b869077b97624f38e8056c06b70a92af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89f6e613ffa032e7e893daa1970d3948.png)
更新时间:2017-08-20 16:52:50
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