已知
.
(1)化简
;
(2)已知
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fcd6688155a418274204b9e28678463.png)
(1)化简
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c1ba6b6ee00c4b2763cb3fa59caa69f.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee974117bc7b5bcd0a7a6f9145e688e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9146fc0a63e5c14a8fa46573e60c07ba.png)
更新时间:2023-03-15 14:17:20
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【推荐2】(1)已知
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(1)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6315bec7b40787760632a64a3bebdaf.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794f2c6bd63355105d179d11306a9cae.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74a6443d1a1fd0498b1751377e230e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab1c17a53981687048cb4906307f8b0b.png)
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