(1)求值:
;
(2)已知
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aa2d23a8fd453c64a8c6beb1a2f2f80.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8243953e45f9db416d64b444b259b02b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6d5b473cd199fd4e1a903f8bb207979.png)
更新时间:2023-12-28 18:09:06
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