计算:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fed78573641463342ce3d49df15af8b9.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0940455c0120842217a063f28f20e602.png)
更新时间:2023-02-21 13:18:18
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解答题-计算题
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较易
(0.85)
【推荐2】计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcaa20dae0ab1fab5ffb7eac38b6295.png)
解法1:原式=![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99fe3d1a476196739ee90ede230514ed.png)
解法2:原式的倒数为:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a14daf93f8e758537ad76984f7352c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d27a5a9b01d501ab457382ac962eac2.png)
故原式=![](https://staticzujuan.xkw.com/quesimg/Upload/formula/010ba2f9305f6202333600792870d173.png)
请阅读上述材料,选择合适的方法计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcaa20dae0ab1fab5ffb7eac38b6295.png)
解法1:原式=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99fe3d1a476196739ee90ede230514ed.png)
解法2:原式的倒数为:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a14daf93f8e758537ad76984f7352c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d27a5a9b01d501ab457382ac962eac2.png)
故原式=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/010ba2f9305f6202333600792870d173.png)
请阅读上述材料,选择合适的方法计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b08df576e6101dbe6c4e4944df74cafa.png)
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