(1)已知
,
,求证:
;
(2)
,
,若
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a12903868171ce061050d684e4e05f8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37fde3e6fa600a4ef23ddf82d548f925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e066bd26136b35345591b2cdbd3a6f9c.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/138ce9127942a09324236b94883a5929.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adaf5b4ca4101987014ac755a8d7eb81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d2301518f1bc2456cc2671a26c8c8a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c39d1d88189726ae99c309644fca3494.png)
更新时间:2020-06-26 16:20:59
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