{"id":1884,"date":"2021-09-18T15:33:29","date_gmt":"2021-09-18T06:33:29","guid":{"rendered":"https:\/\/www.roundown.net\/nyushi\/?p=1884"},"modified":"2021-09-18T15:33:29","modified_gmt":"2021-09-18T06:33:29","slug":"thr201603","status":"publish","type":"post","link":"https:\/\/www.roundown.net\/nyushi\/thr201603\/","title":{"rendered":"\u6771\u5317\u5927\u7406\u7cfb2016\uff1a\u7b2c3\u554f"},"content":{"rendered":"<hr \/>\n<p>\u30b5\u30a4\u30b3\u30ed\u3092 \\(3\\) \u56de\u632f\u3063\u3066\u51fa\u305f\u76ee\u306e\u6570\u3092\u305d\u308c\u305e\u308c \\(a , b , c\\) \u3068\u3059\u308b. \u4ee5\u4e0b\u306e\u554f\u3044\u306b\u7b54\u3048\u3088.<\/p>\r\n<ol>\r\n<li><p><strong>(1)<\/strong>\u3000\\(a , b , c\\) \u304c\u3042\u308b\u76f4\u89d2\u4e09\u89d2\u5f62\u306e \\(3\\) \u8fba\u306e\u9577\u3055\u3068\u306a\u308b\u78ba\u7387\u3092\u6c42\u3081\u3088.<\/p><\/li>\r\n<li><p><strong>(2)<\/strong>\u3000\\(a , b , c\\) \u304c\u3042\u308b\u920d\u89d2\u4e09\u89d2\u5f62\u306e \\(3\\) \u8fba\u306e\u9577\u3055\u3068\u306a\u308b\u78ba\u7387\u3092\u6c42\u3081\u3088.<\/p><\/li>\r\n<\/ol>\r\n<hr \/>\r\n<!--more-->\r\n<h4>\u3010 \u89e3 \u7b54 \u3011<\/h4>\r\n<p><strong>(1)<\/strong><\/p>\r\n<p>\u3055\u3044\u3053\u308d\u306e\u76ee\u306e\u51fa\u65b9\u306f, \\(6^3\\) \u901a\u308a.<br \/>\r\n\\(1\\) \u304b\u3089 \\(6\\) \u306e\u5e73\u65b9\u6570\u306f, \\(1 , 4 , 9 , 16 , 25 , 36\\) \u306a\u306e\u3067, \u76f4\u89d2\u4e09\u89d2\u5f62\u3068\u306a\u308b \\(3\\) \u8fba\u306e\u7d44\u5408\u305b\u306f, \\(( 3 , 4 , 5 )\\) \u306e\u307f.<br \/>\r\n\\(a , b , c \\) \u304c \u3053\u306e\u7d44\u306e\u6570\u3068\u306a\u308b\u306e\u306f, \\(3 !\\) \u901a\u308a\u306a\u306e\u3067, \u6c42\u3081\u308b\u78ba\u7387\u306f\r\n\\[\r\n\\dfrac{3 !}{6^3} = \\underline{\\dfrac{1}{36}} \\ .\r\n\\]\r\n<p><strong>(2)<\/strong><\/p>\r\n<p>\\(a \\geqq b \\geqq c\\) ... [1] \u3068\u4eee\u5b9a\u3059\u308b\u3068, \u920d\u89d2\u4e09\u89d2\u5f62\u306b\u306a\u308b\u306e\u306f\r\n\\[\r\na \\lt b+c \\quad \\text{\u304b\u3064} \\quad a^2 \\gt b^2 +c^2\r\n\\]\r\n\u304c\u6210\u7acb\u3059\u308b\u3068\u304d.<br \/>\r\n\\(a\\) \u306e\u5024\u3067\u5834\u5408\u5206\u3051\u3057\u3066, \u6761\u4ef6\u3092\u307f\u305f\u3059 \\(( b , c )\\) \u306e\u7d44\u3092\u8003\u3048\u308b.<\/p>\r\n<ul>\r\n<li><p>\\(a = 6\\) \u306e\u3068\u304d\r\n\\[\r\n( b , c ) = ( 5 , 3 ) , ( 5 , 2 ) , ( 4 , 4 ) , ( 4 , 3 ) \\ .\r\n\\]<\/li>\r\n<li><p>\\(a = 5\\) \u306e\u3068\u304d\r\n\\[\r\n( b , c ) = ( 4 , 2 ) , ( 3 , 3 ) \\ .\r\n\\]<\/li>\r\n<li><p>\\(a = 4\\) \u306e\u3068\u304d\r\n\\[\r\n( b , c ) = ( 3 , 2 ) \\ .\r\n\\]<\/li>\r\n<li><p>\\(a = 3\\) \u306e\u3068\u304d\r\n\\[\r\n( b , c ) = ( 2 , 2 ) \\ .\r\n\\]<\/li>\r\n<li><p>\\(a = 2 , 1\\) \u306e\u3068\u304d\u306f, \u6761\u4ef6\u3092\u307f\u305f\u3059\u7d44\u306f\u306a\u3044.<\/p><\/li>\r\n<\/ul>\r\n<p>\u4ee5\u4e0a\u3067\u6c42\u3081\u305f \\(8\\) \u7d44\u306e \\((a , b , c)\\) \u306e\u7d44\u306e\u3046\u3061, \\(2\\) \u6570\u306e\u307f\u304c\u540c\u3058\u7d44\u304c \\(3\\) \u7d44, \\(3\\) \u6570\u304c\u3059\u3079\u3066\u7570\u306a\u308b\u7d44\u304c \\(5\\) \u7d44\u3042\u308b.<br \/>\r\n\u3088\u3063\u3066, [1] \u306e\u4eee\u5b9a\u3092\u53d6\u308a\u9664\u3051\u3070, \u6c42\u3081\u308b\u78ba\u7387\u306f\r\n\\[\r\n\\dfrac{3 \\cdot {} _ {3}\\text{C} {} _ {2} +5 \\cdot 3 !}{6^3} = \\underline{\\dfrac{13}{72}} \\ .\r\n\\]\r\n","protected":false},"excerpt":{"rendered":"\u30b5\u30a4\u30b3\u30ed\u3092 \\(3\\) \u56de\u632f\u3063\u3066\u51fa\u305f\u76ee\u306e\u6570\u3092\u305d\u308c\u305e\u308c \\(a , b , c\\) \u3068\u3059\u308b. \u4ee5\u4e0b\u306e\u554f\u3044\u306b\u7b54\u3048\u3088. (1)\u3000\\(a , b , c\\) \u304c\u3042\u308b\u76f4\u89d2\u4e09\u89d2\u5f62\u306e \\(3\\) \u8fba\u306e\u9577\u3055\u3068\u306a\u308b\u78ba\u7387\u3092\u6c42\u3081\u3088. (2)\u3000 &hellip; <a href=\"https:\/\/www.roundown.net\/nyushi\/thr201603\/\">\u7d9a\u304d\u3092\u8aad\u3080 <span class=\"meta-nav\">&rarr;<\/span><\/a>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[155],"tags":[148,162],"class_list":["post-1884","post","type-post","status-publish","format-standard","hentry","category-tohoku_r_2016","tag-tohoku_r","tag-162"],"_links":{"self":[{"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/posts\/1884","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/comments?post=1884"}],"version-history":[{"count":0,"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/posts\/1884\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/media?parent=1884"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/categories?post=1884"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/tags?post=1884"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}