{"id":1683,"date":"2006-06-11T22:00:38","date_gmt":"2006-06-11T13:00:38","guid":{"rendered":"http:\/\/www.sssg.org\/blogs\/hiro345\/archives\/1683.html"},"modified":"2006-06-11T22:00:38","modified_gmt":"2006-06-11T13:00:38","slug":"why-does-09999-1","status":"publish","type":"post","link":"https:\/\/www.hiro345.net\/blogs\/hiro345\/archives\/1683.html","title":{"rendered":"Why does 0.9999&#8230; = 1 ?"},"content":{"rendered":"<p>\u300c<a href=\"http:\/\/ja.wikipedia.org\/wiki\/0.999...%E3%81%8C1%E3%81%AB%E7%AD%89%E3%81%97%E3%81%84%E3%81%93%E3%81%A8%E3%81%AE%E8%A8%BC%E6%98%8E\">0.999&#8230;\u304c1\u306b\u7b49\u3057\u3044\u3053\u3068\u306e\u8a3c\u660e<\/a>\u300d\u3068\u3044\u3046\u3053\u3068\u306a\u306e\u3067\u3059\u304c\u30011\u3078\u53ce\u675f\u306f\u3059\u308b\u3082\u306e\u306e\u7b49\u3057\u304f\u306f\u306a\u3089\u306a\u3044\u3088\u3046\u306a\u6c17\u304c\u3057\u307e\u3059\u3002<\/p>\n<p>\u3057\u304b\u3057\u3001\u7d39\u4ecb\u3055\u308c\u3066\u3044\u308b\u8a3c\u660e\u306e\u3046\u3061\u3001\u300cx=0.999&#8230; (\u5faa\u74b0\u5c0f\u6570)\u3068\u304a\u3044\u3066\u300110x=9.99&#8230;\uff08\u5faa\u74b0\u5c0f\u6570\uff09\u3068\u3057\u305f\u5834\u5408\u306b\u300110x &#8211; x = 9x = 9.99&#8230;\uff08\u5faa\u74b0\u5c0f\u6570\uff09 &#8211; 0.999&#8230; (\u5faa\u74b0\u5c0f\u6570) = 9 \u304b\u3089\u3001 x = 1\u300d \u3068\u3044\u3046\u306e\u306f\u3001\u304d\u308c\u3044\u306a\u8a3c\u660e\u306e\u3088\u3046\u306b\u898b\u3048\u307e\u3059\u3002<\/p>\n<p>\u3068\u3044\u3046\u3053\u3068\u3067\u3001\u5b8c\u5168\u306e\u5b8c\u5168\u306e\u5b8c\u5168\u3068\u3044\u3046\u307b\u3069\u306b\u306f\u7d0d\u5f97\u3067\u304d\u306a\u3044\u306e\u3067\u3059\u304c\u77e5\u8b58\u3068\u3057\u3066\u899a\u3048\u3066\u304a\u3053\u3046\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u300c0.999&#8230;\u304c1\u306b\u7b49\u3057\u3044\u3053\u3068\u306e\u8a3c\u660e\u300d\u3068\u3044\u3046\u3053\u3068\u306a\u306e\u3067\u3059\u304c\u30011\u3078\u53ce\u675f\u306f\u3059\u308b\u3082\u306e\u306e\u7b49\u3057\u304f\u306f\u306a\u3089\u306a\u3044\u3088\u3046\u306a\u6c17\u304c\u3057\u307e\u3059\u3002 \u3057\u304b\u3057\u3001\u7d39\u4ecb\u3055\u308c\u3066\u3044\u308b\u8a3c\u660e\u306e\u3046\u3061\u3001\u300cx=0.999&#8230; (\u5faa\u74b0\u5c0f\u6570)\u3068\u304a\u3044\u3066\u300110 &hellip; <a href=\"https:\/\/www.hiro345.net\/blogs\/hiro345\/archives\/1683.html\">\u7d9a\u304d\u3092\u8aad\u3080 <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-1683","post","type-post","status-publish","format-standard","hentry","category-etc"],"_links":{"self":[{"href":"https:\/\/www.hiro345.net\/blogs\/hiro345\/wp-json\/wp\/v2\/posts\/1683","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hiro345.net\/blogs\/hiro345\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hiro345.net\/blogs\/hiro345\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hiro345.net\/blogs\/hiro345\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hiro345.net\/blogs\/hiro345\/wp-json\/wp\/v2\/comments?post=1683"}],"version-history":[{"count":0,"href":"https:\/\/www.hiro345.net\/blogs\/hiro345\/wp-json\/wp\/v2\/posts\/1683\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.hiro345.net\/blogs\/hiro345\/wp-json\/wp\/v2\/media?parent=1683"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hiro345.net\/blogs\/hiro345\/wp-json\/wp\/v2\/categories?post=1683"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hiro345.net\/blogs\/hiro345\/wp-json\/wp\/v2\/tags?post=1683"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}