求值:(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dc2258ce9e060b914a1a29e1f792289.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/931fa05fdbab85429914dcc39ae1cf4d.png)
更新时间:2019-11-08 16:54:31
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解答题-问答题
|
较易
(0.85)
解题方法
【推荐1】已知
,求下列各式的值:
(1)
;
(2)
;
(3)
;
(4)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d586be112cea35ce289229e22bef7dd4.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930f7706c8f0a021d2e81f1cba24cca0.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ffec753023052aed6a1f2137a5b6b04.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e215cb47345887b6320c4914b9682e06.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1389e7ecf311a64ae452e5f2143bdf7.png)
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