√2が無理数であることの2つの証明
√2が無理数であることの証明!答案でも使える簡単な証明! ホームページ:http://mkmath.net/ YouTube講義動画まとめ:http://mkmath.net/youtube/ Twitter: / 4p_t 講師:古賀真輝

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I tried to prove that √2 is an irrational number in 13 different ways.
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[Nagoya City Univ. Med.] Number of distinct real roots of a cubic equation: The "second solution"...

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