[請問] 兩題 sigma 問題:－線上遊戲排行榜2013/2014,進擊的巨人線上看,candy crush saga外掛,正妹寫真三圍

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[請問] 兩題 sigma 問題

Aug 2nd 2013, 00:02, by TheNewiPad

作者TheNewiPad (全新iPad)

看板ask

標題[請問] 兩題 sigma 問題

時間Fri Aug 2 00:02:35 2013

我被親戚的小孩問倒了... 題目是 sigma 的兩個題目 (1) http://ppt.cc/izuJ (2) http://ppt.cc/nk6T 都是階乘的 sigma 問題照片裡面有有答案天那高中數學我都還給老師了ˊˋ 有人知道這兩題怎麼解嗎，謝謝大大 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 114.32.219.62

噓 Nash4208:(1)的n在哪OAO? 08/02 00:34

→ pphhxx:前n項，k從1代到n，然後各項加起來 08/02 00:36

推 Nash4208:按錯抱歉 08/02 00:36

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