不等式 | 数学の星 https://math-jp.net 数とはなにか、無限とはなにか Sat, 25 Oct 2025 12:27:21 +0000 ja hourly 1 https://wordpress.org/?v=6.9 https://math-jp.net/wp-content/uploads/2016/12/cropped-2015-06-06-18.34.04-1-2-32x32.jpg 不等式 | 数学の星 https://math-jp.net 32 32 相加相乗平均の行列式版の関係 https://math-jp.net/2025/10/25/%e7%9b%b8%e5%8a%a0%e7%9b%b8%e4%b9%97%e5%b9%b3%e5%9d%87%e3%81%ae%e8%a1%8c%e5%88%97%e5%bc%8f%e7%89%88%e3%81%ae%e9%96%a2%e4%bf%82/ Sat, 25 Oct 2025 12:18:57 +0000 https://math-jp.net/?p=4993 一次拡張不等式を複素数の範囲で解く https://math-jp.net/2024/03/20/%e4%b8%80%e6%ac%a1%e6%8b%a1%e5%bc%b5%e4%b8%8d%e7%ad%89%e5%bc%8f%e3%82%92%e8%a4%87%e7%b4%a0%e6%95%b0%e3%81%ae%e7%af%84%e5%9b%b2%e3%81%a7%e8%a7%a3%e3%81%8f/ Wed, 20 Mar 2024 13:03:30 +0000 https://math-jp.net/?p=4944 不等式問題[2006年筑波大前期理系第２問] https://math-jp.net/2022/05/07/2006-tsukuba-early-term-science-2-inequality-problem/ https://math-jp.net/2022/05/07/2006-tsukuba-early-term-science-2-inequality-problem/#respond Fri, 06 May 2022 23:44:58 +0000 http://www.math-jp.net/?p=605 https://math-jp.net/2022/05/07/2006-tsukuba-early-term-science-2-inequality-problem/feed/ 0 存在定理の証明は難しいものが多いですが・・・面白い https://math-jp.net/2020/03/21/hatonosugenri/ Sat, 21 Mar 2020 01:28:30 +0000 https://math-jp.net/?p=4251 平均の平均は平均ではないが平均になる https://math-jp.net/2019/07/06/heikin-no-heikin/ Fri, 05 Jul 2019 21:58:14 +0000 https://math-jp.net/?p=4064 二次不等式の解がすべての実数になる時、判別式は負 https://math-jp.net/2017/04/10/quadratic-inequality/ https://math-jp.net/2017/04/10/quadratic-inequality/#respond Mon, 10 Apr 2017 14:19:45 +0000 http://www.math-jp.net/?p=2039 https://math-jp.net/2017/04/10/quadratic-inequality/feed/ 0 本当に「1=0.999…」でよいのか？ https://math-jp.net/2017/03/12/is-it-really-1-0-999/ Sat, 11 Mar 2017 15:55:15 +0000 http://www.math-jp.net/?p=1649 数学問題2011年静岡大第2(奇素数の問題） https://math-jp.net/2017/02/17/sizuoka2011kisosu/ https://math-jp.net/2017/02/17/sizuoka2011kisosu/#comments Thu, 16 Feb 2017 21:26:09 +0000 http://www.math-jp.net/?p=1224 https://math-jp.net/2017/02/17/sizuoka2011kisosu/feed/ 6