已知
.求:
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70c58bf65099fc34d34f64ddfd94cc06.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a73ca6463dd023cbf937f5a37b934a67.png)
更新时间:2023-12-24 13:55:16
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