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(2001•乌鲁木齐)计算:①= ; ②= ; ③= ; ④= . 通过以上计算...
(2001•乌鲁木齐)计算:①
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019105435745493417/SYS201310191054357454934019_ST/0.png)
=
;
②
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019105435745493417/SYS201310191054357454934019_ST/1.png)
=
;
③
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019105435745493417/SYS201310191054357454934019_ST/2.png)
=
;
④
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019105435745493417/SYS201310191054357454934019_ST/3.png)
=
.
通过以上计算,观察规律,写出用n(n为正整数)表示上面规律的等式
.
考点分析:
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