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pighead
Re: 酷
楼主:
whhsu
(ck49th318)
2016-10-07 23:56:39
因为一些因素要算几题国中数学
结果居然出现接近无穷等比数列的东西(1加到99),
现在数学有那么难哦? @@
还好网络上有验算工具 :p
https://www.mathsisfun.com/numbers/sigma-calculator.html
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