(1)计算:
.
(2)解方程组:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08a816fd944f0a9bb5f0d97e7427aabe.png)
(2)解方程组:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28d6020379a929078e89e4ff040594fb.png)
更新时间:2024-02-28 10:32:16
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解答题-计算题
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【推荐1】阅读并回答下面问题:
计算:
.
设
,
.
原式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc098b3d68fea190edcb7a96a3da19ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8da136454916187af24c5f117fb3053e.png)
.
因为
,
,
所以
,
.
原式
.
(1)填空:①
__________;
②
__________.
(2)请仿照上面的方法计算:
.
计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cbd34e7216a273e18cac7650775f78c.png)
设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bccb4d507014d6e9ad08c4d72bea4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37f48c0aa9cf32e019619194452f05b7.png)
原式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc098b3d68fea190edcb7a96a3da19ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8da136454916187af24c5f117fb3053e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bdb37d2ded17d234c31ec4c9612aa27.png)
因为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bccb4d507014d6e9ad08c4d72bea4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37f48c0aa9cf32e019619194452f05b7.png)
所以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f285c23bbc61f073e174b411d4116d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f7d8dfd87d160556e8a1e40378cbbb8.png)
原式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88c59175aba2f41c4992ac85c2fdfa3c.png)
(1)填空:①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/890dcfff92c88592e268a6fc8d2229dd.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ebde82300c89f0fc8013688c8033b38.png)
(2)请仿照上面的方法计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d4ff157b93231ccd8597aad08af6988.png)
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