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<blockquote style="position: relative; padding-left: 55px;"><section><a href="https://iwshkey.com/notes/9lm5bmhaag3sk0kd">山田:iwshkey: (yamada_20020924@iwshkey.com)'s status on Friday, 03-Nov-2023 21:18:42 JST</a><a href="https://iwshkey.com/@yamada_20020924" title="yamada_20020924@iwshkey.com"><img src="https://gnusocial.jp/avatar/172916-48-20230915074011.webp" width="48" height="48" alt="山田:iwshkey:" style="position: absolute; left: 0; top: 0;">山田:iwshkey:</a></section><article><p>n角形(n\geq3)の時、f(n)=\sum_{i=1}^{n-1}iだと思う。<br><br>RE: <a href="https://voskey.icalo.net/notes/9lm555o5se">https://voskey.icalo.net/notes/9lm555o5se</a></p></article><footer><a rel="bookmark" href="https://gnusocial.jp/conversation/2273816#notice-4482826">In conversation</a><time datetime="2023-11-03T21:18:42+09:00" title="Friday, 03-Nov-2023 21:18:42 JST">about a year ago</time> <span>from <span><a href="https://iwshkey.com/notes/9lm5bmhaag3sk0kd" rel="external" title="Sent from iwshkey.com via ActivityPub">iwshkey.com</a></span></span><a href="https://iwshkey.com/notes/9lm5bmhaag3sk0kd">permalink</a><h4>Attachments</h4><ol><li><article><header><div>Domain not in remote thumbnail source whitelist: voskey.icalo.net</div><h5><a href="https://voskey.icalo.net/notes/9lm555o5se">:suu::suu::suu::suu::suu::suu::suu::suu: (@common_low)</a></h5><div></div></header><div>三角関係が三方向の関係性のとき、n→∞での関係性の一般項を求めよ</div><footer></footer></article></li></ol></footer></blockquote>

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山田:iwshkey: (yamada_20020924@iwshkey.com)'s status on Friday, 03-Nov-2023 21:18:42 JST 山田:iwshkey:
n角形(n\geq3)の時、f(n)=\sum_{i=1}^{n-1}iだと思う。

RE: https://voskey.icalo.net/notes/9lm555o5se
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  :suu::suu::suu::suu::suu::suu::suu::suu: (@common_low)
  三角関係が三方向の関係性のとき、n→∞での関係性の一般項を求めよ

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