已知
,求下列各式的值:
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de0e180ef261881872e9b6cdcca762c0.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddd0b9caf673aa432db7459c783642af.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dbf28c11fd7cf0fa7431806fdee8b7e.png)
更新时间:2022-12-12 18:16:22
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