{"blog_title":"\u30dc\u30af\u30ce\u30b9","title":" 0 / 0","provider_url":"https://hatena.blog","provider_name":"Hatena Blog","type":"rich","published":"2008-05-30 21:17:10","url":"https://boxnos.hatenablog.com/entry/20080530/1212149830","width":"100%","blog_url":"https://boxnos.hatenablog.com/","version":"1.0","height":"190","author_url":"https://blog.hatena.ne.jp/tanakaBox/","image_url":null,"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fboxnos.hatenablog.com%2Fentry%2F20080530%2F1212149830\" title=\" 0 / 0 - \u30dc\u30af\u30ce\u30b9\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_name":"tanakaBox","description":"sign(x) = x / abs(x)\u306f\u30bc\u30ed\u9664\u7b97\u30a8\u30e9\u30fc\u306b\u306a\u308b\u304b\u3089\u30c0\u30e1\u3002\u3068\u66f8\u3053\u3046\u3068\u601d\u3063\u305f\u3051\u3069\u3001\u30a4\u30de\u30a4\u30c1\u5f15\u3063\u304b\u304b\u308b\u3002 1 / 0 1 / 0 \u306f\u4e0d\u5b9a\u306a\u306e\u306f\u308f\u304b\u308b\u30021 / 0 = x\u3068\u304a\u3044\u3066\u3001\u4e21\u8fba\u306b\u30bc\u30ed\u3092\u639b\u3051\u308b\u3068\u30011 = x * 0x * 0\u30671\u306b\u306a\u308b\u6570\u306f\u7121\u3044\u3002\u306a\u306e\u3067\u4e0d\u5b9a\u3002 0 / 0 \u3093\u3058\u3083\u30010 / 0\u3067\u3084\u3063\u3066\u307f\u308b\u30020 / 0 = x\u3068\u304a\u3044\u3066\u3001\u4e21\u8fba\u306b\u30bc\u30ed\u3092\u639b\u3051\u308b\u3068\u30010 = x * 0x * 0\u30670\u3002\u6210\u308a\u7acb\u3063\u3061\u3083\u3063\u305f\u3002 \u8abf\u3079\u308b \u306a\u3093\u304b\u304a\u304b\u3057\u3044\u3068\u601d\u3063\u3066\u3001\u30bc\u30ed\u9664\u7b97 - Wikipedia\u3092\u8abf\u3079\u3066\u307f\u308b\u3068\u3001 0 * 1 = 0 * 2\u3053\u308c\u306f\u3044\u3044\u30020 = 0 / 0\u3068\u3059\u308b\u3068\u3001\u3053\u3046\u66f8\u3051\u3066\u3001(0 / 0) * \u2026","categories":["math"]}