# 146. (★★★) 4step 数B 問87 (P22)の類題（漸化式/分数型）弘前大
4step 数B 問87 (P22)の類題。 分数型の漸化式です。どの参考書にも掲載されている定番問題です。弘前大 0:00 オープニング 0:15 概要と解法の流れ 2:34 解法１ 5:05 解法２ 8:00 解法３ 12:11 補足 14:18 エンディング
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# 147. (★★★) 特性方程式の意味（分数型・漸化式）
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# 148. (★★) 旧4step 数B 問86 (P22)の類題（確率漸化式）
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【高校数学】#088 2014 大阪大 数Ⅲ 面積評価が必要なΣ計算
![The common test without guidance had too many good questions [4-term recurrence formula]](https://i.ytimg.com/vi/p1gbtPfIPyc/hqdefault.jpg?sqp=-oaymwEjCNACELwBSFryq4qpAxUIARUAAAAAGAElAADIQj0AgKJDeAE=&rs=AOn4CLCGUOghkA7oFx9tyYvVA5vcA-EjUw)
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The common test without guidance had too many good questions [4-term recurrence formula]
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# 86. (★★★★) 数Ⅱ abcの最大・最小
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26年 神戸大(理系) 数学 第3問
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# 229. (★★★)和Sと漸化式「最速解法は？」
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【数学B】漸化式とは？ 〜新聞記者たちの物語〜 数列【14話】
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弘前大（医、他）分数型漸化式 高校数学 Japanese university entrance exam questions
![[Attention: Reduced points] Good question with a lot of ideas and notes on the number line.](https://i.ytimg.com/vi/DAvhL3IbMy4/hqdefault.jpg?sqp=-oaymwEjCNACELwBSFryq4qpAxUIARUAAAAAGAElAADIQj0AgKJDeAE=&rs=AOn4CLBP4rUxWzFAVwVPfis3CP8F6smVyQ)
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[Attention: Reduced points] Good question with a lot of ideas and notes on the number line.
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漸化式：隣接３項間型【数学ⅡB・数列】
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【漸化式】逆数をとる分数型の解き方をイチから！
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La Campanella Original 1838 VS 1851 (Sheet Music)
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A lesson on recurrence formulas that you will never forget once you hear it
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# 109. (★★) 数Ⅱ 整式の割り算（東京都立大）
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等差×等比型の数列の和【高校数学】数列＃４４
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Researchers thought this was a bug (Borwein integrals)
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Truly Understand Trigonometry
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# 250. (★★★)４項間漸化式
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