{"published":"2026-05-23 02:31:11","provider_name":"Hatena Blog","categories":["\u6570\u5b66","\u6559\u80b2"],"type":"rich","height":"190","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.omoshiro-suugaku.com%2Fentry%2Fhow-to_-write-a-proof\" title=\"\u3053\u306e\u8a3c\u660e\u306e\u66f8\u304d\u65b9\u3001\u3069\u3046\u601d\u3046\uff1f - \u3044\u306c\u304a\u3055\u3093\u306e\u304a\u3082\u3057\u308d\u6570\u5b66\u5b9f\u9a13\u5ba4\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","title":"\u3053\u306e\u8a3c\u660e\u306e\u66f8\u304d\u65b9\u3001\u3069\u3046\u601d\u3046\uff1f","blog_url":"https://www.omoshiro-suugaku.com/","description":"\u4f55\u5e74\u304b\u524d\u3001\u9ad8\u68212\u5e74\u306e\u6570\u5b66\u306e\u8a66\u9a13\u554f\u984c\u3067\u3059\u3002 \u8a66\u9a13\u554f\u984c\uff1aa + b + c = 0 \u2026\u2026\u2460 \u306e\u3068\u304d\u3001\u6b21\u306e\u7b49\u5f0f\u3092\u8a3c\u660e\u305b\u3088\u3002a(a + b) + b(b + c) + c(c + a) + ab + bc + ca = 0 \u2026\u2026\u2461 \u751f\u5f92\u306e\u7b54\u6848\uff1aa+b = -c, b+c = -a, c+a = -b\u3092\u2461\u3078\u4ee3\u5165\u3059\u308b\u3068a(-c) + b(-a) + c(-b) + ab + bc + ca = 0 \u2026\u2026\u2462-ac - ba - cb + ab + bc + ca = 0 \u2026\u2026\u24630 = 0 \u2026\u2026\u2464\u3088\u3063\u3066\u2461\u304c\u793a\u3055\u308c\u305f\u3002 \u63a1\u70b9\u306e\u3068\u304d\u3001\u307c\u304f\u304c\u300c\u7d50\u8ad6\u306e\u5f0f\u304b\u3089\u51fa\u767a\u3057\u3066\u8b70\u8ad6\u3057\u3066\u3044\u308b\u3002\u6e1b\u70b9\u306b\u3057\u307e\u3059\u304b\uff1f \u305d\u308c\u3068\u3082\u5c11\u3057\u7518\u304f\u3057\u3066\u2026","blog_title":"\u3044\u306c\u304a\u3055\u3093\u306e\u304a\u3082\u3057\u308d\u6570\u5b66\u5b9f\u9a13\u5ba4","url":"https://www.omoshiro-suugaku.com/entry/how-to_-write-a-proof","width":"100%","image_url":null,"author_name":"Inuosann","provider_url":"https://hatena.blog","version":"1.0","author_url":"https://blog.hatena.ne.jp/Inuosann/"}