求下列各式的值:
(1)若
,求
的值.
(2)
;
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88ccf942db53c0798a9b0db6eb44597a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac877c3c2f6d3a4b0720b5d92e9885bf.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbdbaf5f98493f9ade42a0b2ff30f90f.png)
更新时间:2022-09-28 20:24:42
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