プラチカの別解思いついたよ
New book "Why is a minus multiplied by a minus a plus?" → https://amzn.to/4kWEEBu "Train your mathematical brain with middle school knowledge! Cultivate logical thinking with 8 approaches" https://amzn.to/2UJxzwq Bluebacks "100 Immortal Problems in University Entrance Exam Mathematics: A Math Test for Adults" https://amzn.to/2Q7bUvU https://amzn.to/2t28U8C Euler's official T-shirt, the catchphrase is "Kantaro". https://www.ttrinity.jp/p/248613/ Contact information, job requests, inquiries → [email protected] Twitter / kantaro196611 #ShogiPuzzle #Mathematics #SotaFujii
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不思議な方程式。優秀な視聴者様！疑問に答えて！
![[Excellent Entrance Exam Question] Tests your sense of exponents [Keio University, 2024]](https://i.ytimg.com/vi/HuSH-0kzJYU/hqdefault.jpg?sqp=-oaymwEjCNACELwBSFryq4qpAxUIARUAAAAAGAElAADIQj0AgKJDeAE=&rs=AOn4CLAodo9yIAc0HPTQSl8kmgM5kyDr5A)
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[Excellent Entrance Exam Question] Tests your sense of exponents [Keio University, 2024]
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天才数学者オイラーはどのようにして導いたのか【バーゼル問題】
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有名問題だよ（多分）
![[Nagoya City Univ. Med.] Number of distinct real roots of a cubic equation: The "second solution"...](https://i.ytimg.com/vi/hFpQCxVDyog/hqdefault.jpg?sqp=-oaymwEjCNACELwBSFryq4qpAxUIARUAAAAAGAElAADIQj0AgKJDeAE=&rs=AOn4CLD3t4jBH9M12i7mdEzuTjimftdVWQ)
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[Nagoya City Univ. Med.] Number of distinct real roots of a cubic equation: The "second solution"...
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10年間で人気度が激変した大学
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We're 99.9% sure this pattern is true, but no one can prove it
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【7月30日まで】なぜ今Googleが規約変更を行うのか？本当の理由と対策方法を徹底解説！【無視するとどうなる？】
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中学数学からはじめる三角関数
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Viele scheitern an dieser Aufgabe!
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A clever method for avoiding cross-multiplication in factorization.
![[2026 Tokyo University Mathematics Answer Report] Science Question 6: Simple but highly praised f...](https://i.ytimg.com/vi/9-tUVPTFNy8/hqdefault.jpg?sqp=-oaymwEjCNACELwBSFryq4qpAxUIARUAAAAAGAElAADIQj0AgKJDeAE=&rs=AOn4CLCNTIDVekx5h5FAVDznPh8oov-Qhg)
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[2026 Tokyo University Mathematics Answer Report] Science Question 6: Simple but highly praised f...
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The technique to solve this symmetrical equation in 30 seconds is too good to be true.
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Sieht einfach aus? – Löse das Gleichungssystem!
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“You’ll Never Be Like Us.” Until 500KG Happened 🔥
![Proof of the actual question “The derivative of sinx is cosx” [Osaka University].](https://i.ytimg.com/vi/jpqkGIkcAvM/hqdefault.jpg?sqp=-oaymwEjCNACELwBSFryq4qpAxUIARUAAAAAGAElAADIQj0AgKJDeAE=&rs=AOn4CLCxaCsAbcv1XaeU_JNF6RsFxxlSfw)
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Proof of the actual question “The derivative of sinx is cosx” [Osaka University].
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天才オイラーが解決した問題。奇数の平方の逆数の和にπが登場
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Hilberts Hotel
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Formula for solving cubic equations (Cardano formula)
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