{"blog_title":"Life is Beautiful","url":"https://lambtani.hatenablog.jp/entry/20130208/1360316784","description":"\u5148\u65e5\u3001KSY\u5148\u751f\u304b\u3089\u6b21\u306e\u3088\u3046\u306a\u8cea\u554f\u3092\u53d7\u3051\u305f\uff1a \u4e8c\u6b21\u95a2\u6570y=f(x)=ax^2+bx+c\u3068\u3057\u305f\u3068\u304d\u3001a\u306f\u50be\u304d\u306e\u5909\u5316\u3001\u3064\u307e\u308a\u66f2\u7387\u306e\u3088\u3046\u306a\u3082\u306e\u3092\u8868\u3057\u3066\u3044\u3066\u3001c\u306ff(0)\u3064\u307e\u308a\u5207\u7247\u3092\u8868\u3059\u3088\u306d\u3002\u3058\u3083\u3042b\u306e\u72ec\u7acb\u7684\u306a\u5e7e\u4f55\u7684\u306a\u610f\u5473\u306f\uff1f \u5f53\u7136\u3001b\u306f\u9802\u70b9\u306e\u5ea7\u6a19\u3092\u57fa\u5e95\u3059\u308b\u3082\u306e\u3060\u304c\u3001\u5e73\u65b9\u5b8c\u6210\u3092\u3059\u308b\u3068\u3001\u9802\u70b9\u306f\uff08-b/2a, c-b^2/4a\uff09\u3067\u3042\u308b\u3002\u30d1\u30e9\u30e1\u30fc\u30bf\u304c3\u3064\u3067\u9802\u70b9\u306f2\u6b21\u5143\u306a\u306e\u3067\u3001\u72ec\u7acb\u3057\u3066\u3044\u306a\u3044\u3002a\u3068c\u3068\u3092\u5148\u751f\u304c\u8a00\u3046\u3088\u3046\u306a\u5e7e\u4f55\u7684\u610f\u5473\u3067\u6349\u3048\u308b\u3068\u3001\u78ba\u304b\u306b\u610f\u5473\u304c\u898b\u5f53\u305f\u3089\u306a\u3044\u3053\u3068\u304c\u4e88\u6e2c\u3055\u308c\u308b\u3002\u3053\u308c\u306f\u6b21\u306e\u3088\u3046\u306b\u4e8c\u6b21\u5f62\u5f0f\u3067\u8003\u3048\u3088\u3046\uff1a\u3059\u308b\u3068\u3001\u5bfe\u89d2\u6210\u5206\u306fa\u3068c\u3067\u3053\u308c\u306b\u306f\u72ec\u7acb\u306e\u610f\u5473\u304c\u4e0e\u3048\u3089\u308c\u308b\uff08\u5206\u6563\u3060\u3068\u601d\u3063\u3066\u3044\u3044\uff09\u3002 \u3044\u3063\u307d\u3046\u3001\u975e\u2026","image_url":null,"width":"100%","provider_url":"https://hatena.blog","version":"1.0","author_name":"lambtani","author_url":"https://blog.hatena.ne.jp/lambtani/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Flambtani.hatenablog.jp%2Fentry%2F20130208%2F1360316784\" title=\"\u4e8c\u6b21\u5f62\u5f0f - Life is Beautiful\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","title":"\u4e8c\u6b21\u5f62\u5f0f","blog_url":"https://lambtani.hatenablog.jp/","height":"190","categories":["\u52c9\u5f37"],"type":"rich","published":"2013-02-08 18:46:24","provider_name":"Hatena Blog"}