{"id":4737,"date":"2025-08-15T10:00:52","date_gmt":"2025-08-15T01:00:52","guid":{"rendered":"https:\/\/winroadrikeijyuku.com\/oita\/?p=4737"},"modified":"2025-08-18T20:16:34","modified_gmt":"2025-08-18T11:16:34","slug":"%e6%95%b4%e6%95%b0%e5%95%8f%e9%a1%8c%e3%80%80-%e5%a4%a7%e5%88%86%e5%b8%82-%e5%a4%a7%e5%ad%a6%e5%8f%97%e9%a8%93-%e6%95%b0%e5%ad%a6-%e5%a1%be-%e5%a4%a7%e5%88%86%e7%90%86%e7%b3%bb%e5%b0%82%e9%96%80","status":"publish","type":"post","link":"https:\/\/winroadrikeijyuku.com\/oita\/2025\/08\/15\/%e6%95%b4%e6%95%b0%e5%95%8f%e9%a1%8c%e3%80%80-%e5%a4%a7%e5%88%86%e5%b8%82-%e5%a4%a7%e5%ad%a6%e5%8f%97%e9%a8%93-%e6%95%b0%e5%ad%a6-%e5%a1%be-%e5%a4%a7%e5%88%86%e7%90%86%e7%b3%bb%e5%b0%82%e9%96%80\/","title":{"rendered":"\u6574\u6570\u554f\u984c\u305d\u306e\uff11\u3000 | \u5927\u5206\u5e02 \u5927\u5b66\u53d7\u9a13 \u6570\u5b66 \u587e | \u5927\u5206\u7406\u7cfb\u5c02\u9580\u587eWINROAD"},"content":{"rendered":"<p>\u554f\u984c<\/p>\n<p>\u200b\u200b<span class=\"math inherit-color\">\\( 1&lt;x&lt;y\\)\u200b<\/span>\u304a\u3088\u3073\u200b<span class=\"math inherit-color \">\\( (1+\\dfrac{1}{x})(1+\\dfrac{1}{y})=\\dfrac{5}{3} \\)<\/span>\u200b\u3092\u307f\u305f\u3059<\/p>\n<p>\u81ea\u7136\u6570x\u3001y\u306e\u7d44(x , y )\u3092\u3059\u3079\u3066\u6c42\u3081\u3088\u3002(\u4e00\u6a4b\u5927)<\/p>\n<hr \/>\n<p>\u307e\u305a\u3069\u306e\u3088\u3046\u306b\u653b\u3081\u3066\u3044\u3063\u305f\u3089\u3044\u3044\u304b\u5206\u304b\u3089\u306a\u304b\u3063\u305f\u3089\u3001\u307e\u305a\u306f\u5024\u3092\u5165\u308c\u3066\u307f\u3066\u3069\u306e\u3088\u3046\u306b\u306a\u308b\u304b\u3092<\/p>\n<p>\u8abf\u3079\u3066\u3044\u304f\u3053\u3068\u304b\u3089\u59cb\u3081\u307e\u3057\u3087\u3046<\/p>\n<p>\u3068\u308a\u3042\u3048\u305a1&lt;x&lt;y\u3067x , y\u306f\u81ea\u7136\u6570\u306a\u306e\u3067x=2\u304b\u3089\u521d\u3081\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>x=2\u306e\u3068\u304d\u200b<span class=\"math inherit-color \">\\( (1+\\dfrac{1}{x})(1+\\dfrac{1}{y})=\\dfrac{3}{2}(1+\\dfrac{1}{y})=\\dfrac{5}{3} \\)<\/span>\u200b<\/p>\n<p>\u3068\u306a\u308a\u200b<span class=\"math inherit-color \">\\( (1+\\dfrac{1}{y})=\\dfrac{10}{9} \\)<\/span>\u200b\u200b<span class=\"math inherit-color \">\\( \\dfrac{1}{y}=\\dfrac{10}{9}-1=\\dfrac{1}{9} \\)<\/span>\u200b\u3067<\/p>\n<p>\u200b<span class=\"math inherit-color \">\\( y\uff1d\uff19 \\)<\/span>\u200b<\/p>\n<p>\u3053\u308c\u306f\u200b<span class=\"math inherit-color\">\\( \uff11&lt;x\uff1cy \\)<\/span>\u200b\u3092\u6e80\u305f\u3059\u306e\u3067OK!<\/p>\n<p>x=3\u306e\u3068\u304d\u200b<span class=\"math inherit-color \">\\( \\dfrac{4}{3}(1+\\dfrac{1}{y})=\\dfrac{5}{3} \\)<\/span>\u200b\u200b<span class=\"math inherit-color \">\\( (1+\\dfrac{1}{y})=\\dfrac{5}{4}\u21e8\\dfrac{1}{y}=\\dfrac{5}{4}-1=\\dfrac{1}{4} \\)<\/span>\u200b\u3067<\/p>\n<p>\u200b<span class=\"math inherit-color \">\\( y=4 \\)<\/span>\u200b\u3053\u308c\u3082\u200b<span class=\"math inherit-color\">\\( \uff11&lt;x\uff1cy \\)<\/span>\u200b\u3092\u6e80\u305f\u3059\u306e\u3067OK!<\/p>\n<p><span style=\"color: #000080;\">x\u304c\u5897\u52a0\u3057\u305f\u3068\u304d\u306by\u304c\u6e1b\u5c11\u3057\u3066\u3044\u308b\u3053\u3068\u306b\u6ce8\u610f!<\/span><\/p>\n<p>x=4\u306e\u3068\u304d\u200b<span class=\"math inherit-color\">\\( \\dfrac{5}{4}(1+\\dfrac{1}{y})=\\dfrac{5}{3} \\)<\/span>\u200b\u200b\u3068\u306a\u308a<span class=\"math inherit-color \">\\( (1+\\dfrac{1}{y})=\\dfrac{4}{3} \\)<\/span>\u200b<\/p>\n<p>\u200b<span class=\"math inherit-color \">\\( \\dfrac{1}{y}=\\dfrac{4}{3}-1=\\dfrac{1}{3} \\)<\/span>\u200b\u3067<\/p>\n<p>\u200b<span class=\"math inherit-color \">\\( y=3 \\)<\/span>\u200b\u3053\u308c\u306f\u200b<span class=\"math inherit-color\">\\( \uff11&lt;x\uff1cy \\)<\/span>\u200b\u3088\u308a\u4e0d\u9069<\/p>\n<p><span style=\"color: #000080;\">\u3053\u3053\u3067x\u304cy\u3088\u308a\u3082\u5927\u304d\u304f\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3057\u305f\u3002\u3064\u307e\u308ax\u304c\uff14\u4ee5\u4e0a\u3067\u306f\u6210\u7acb\u3057\u306a\u3044\u306e\u3067\u306f\uff01<\/span><\/p>\n<p><span style=\"color: #000080;\">\u3060\u304b\u3089x\u304c\uff14\u4ee5\u4e0a\u3067\u306f\u89e3\u304c\u306a\u3044\u3053\u3068\u3092\u793a\u305b\u3070\u826f\u3044\u306e\u3067\u3059\u3002<\/span><\/p>\n<p>\u200b<span class=\"math inherit-color \">\\( x\\geqq4 \\)<\/span>\u200b\u306e\u3068\u304d\u200b<span class=\"math inherit-color\">\\( \\dfrac{5}{4}(1+\\dfrac{1}{y})\\geqq\\dfrac{5}{3} \\)<\/span>\u200b<\/p>\n<p><span style=\"color: #000080;\">\u3053\u306e\u4e0d\u7b49\u5f0f\u304c\u306a\u305c\u6210\u308a\u7acb\u3064\u306e\u304b?<\/span><\/p>\n<p><span style=\"color: #000080;\">\u200b<span class=\"math inherit-color\">\\( \\dfrac{5}{4}(1+\\dfrac{1}{y})&gt;\\dfrac{6}{5}(1+\\dfrac{1}{y})&gt;\\ldots&gt;(1+\\dfrac{1}{x})(1+\\dfrac{1}{y})=\\dfrac{5}{3} \\)<\/span>\u200b\u3060\u304b\u3089\u3067\u3059<\/span><\/p>\n<p>\u8a71\u306f\u623b\u3063\u3066<\/p>\n<p>\u200b<span class=\"math inherit-color\">\\( \\dfrac{5}{4}(1+\\dfrac{1}{y})\\geqq\\dfrac{5}{3} \\)<\/span>\u200b\u3067\u3059\u304b\u3089\u200b<span class=\"math inherit-color \">\\( \\dfrac{1}{y}\\geqq\\dfrac{1}{3} \\)<\/span>\u200b<\/p>\n<p>\u3064\u307e\u308a\u200b<span class=\"math inherit-color \">\\( y\\leqq3 \\)<\/span>\u200b\u200b<\/p>\n<p><span class=\"math inherit-color\">\\( x\\geqq4\u3067y\\leqq3 \\)<\/span>\u200b\u3053\u308c\u306f\u200b<span class=\"math inherit-color\">\\( \uff11&lt;x\uff1cy \\)<\/span>\u200b\u3088\u308a\u4e0d\u9069\u3002<\/p>\n<p>\u4ee5\u4e0a\u3088\u308a(x , y )=(2 , 9 )\u3001( 3 , 4 )\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u5206\u304b\u3089\u306a\u3044\u3068\u304d\u306f\u5024\u3092\u4ee3\u5165\u3057\u3066\u307f\u3066\u3001\u5404\u8981\u7d20\u304c\u3069\u306e\u3088\u3046\u306b\u5909\u5316\u3057\u3066\u3044\u304f\u304b\u3092\u8abf\u3079\u3066\u307f\u308b\u3053\u3068\u3082\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<p>\u521d\u3081\u304b\u3089\u6570\u5f0f\u3067\u306a\u3093\u3068\u304b\u3057\u3088\u3046\u3068\u8a66\u307f\u3066\u3064\u307e\u305a\u3044\u305f\u3089\uff11\u3064\u306e\u65b9\u7b56\u3067\u3059\u3088\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u3061\u306a\u307f\u306b\u6570\u5f0f\u3067\u51e6\u7406\u3059\u308b\u3068<\/p>\n<p>\u200b<span class=\"math inherit-color \">\\( (1+\\dfrac{1}{x})(1+\\dfrac{1}{y})=\\dfrac{5}{3} \\)<\/span>\u200b\u3088\u308a\u200b<span class=\"math inherit-color \">\\( \\dfrac{(x+1)(y+1)}{xy}=\\dfrac{5}{3} \\)<\/span>\u200b<\/p>\n<p>\u200b<span class=\"math inherit-color \">\\( 3(x+1)(y+1)=5xy \\)<\/span>\u200b<\/p>\n<p>\u200b<span class=\"math inherit-color \">\\( 5xy=3(xy+x+y+1) \\)<\/span>\u200b<\/p>\n<p>\u200b<span class=\"math inherit-color \">\\( 5xy-3xy-x-y-3=0 \\)<\/span>\u200b<\/p>\n<p>\u200b<span class=\"math inherit-color \">\\( 2xy-3x-3y-3=0 \\)<\/span>\u200b\u3053\u3053\u3067\u6574\u6570\u554f\u984c\u306e\u5b9a\u756a\u306e\u5f62\u306b\u6301\u3061\u8fbc\u307f\u305f\u3044\u306e\u3067\u4e21\u8fba\u3092\uff12\u500d\u3057\u307e\u3059\u3002<\/p>\n<p>\u200b<span class=\"math inherit-color \">\\( 4xy-6x-6y-6=0 \\)<\/span>\u200b<\/p>\n<p>\u200b<span class=\"math inherit-color \">\\( (2x-3)(2y-3)-9-6=0\\\\(2x-3)(2y-3)=15 \\)<\/span>\u200b<\/p>\n<p>x\u3001y\u306f\u81ea\u7136\u6570\u3067\u200b\u200b<span class=\"math inherit-color\">\\( 1&lt;x&lt;y\\)\u200b<\/span>\u306a\u306e\u3067<\/p>\n<p>\u200b<span class=\"math inherit-color \">\\( 2x-3=1\u30012y-3=15\\\\\u307e\u305f\u306f2x-3=3\u30012y-3=5 \\)<\/span>\u200b<\/p>\n<p>\u4ee5\u4e0a\u3088\u308a(x , y )=(2 , 9 )\u3001( 3 , 4 )\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\uff08\u5927\u5206\u7406\u7cfb\u5c02\u9580\u587e<span class=\"s1\">WINROAD <\/span>\u9996\u85e4\uff09<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u554f\u984c \u200b\u200b\\( 1&lt;x&lt;y\\)\u200b\u304a\u3088\u3073\u200b\\( (1+\\dfrac{1}{x})(1+\\dfrac{1}{y})=\\dfrac{5}{3} \\)\u200b\u3092\u307f\u305f\u3059 \u81ea\u7136\u6570x\u3001y\u306e\u7d44(x , y )\u3092\u3059\u3079\u3066\u6c42\u3081\u3088\u3002(\u4e00\u6a4b<\/p>\n<p><a href=\"https:\/\/winroadrikeijyuku.com\/oita\/2025\/08\/15\/%e6%95%b4%e6%95%b0%e5%95%8f%e9%a1%8c%e3%80%80-%e5%a4%a7%e5%88%86%e5%b8%82-%e5%a4%a7%e5%ad%a6%e5%8f%97%e9%a8%93-%e6%95%b0%e5%ad%a6-%e5%a1%be-%e5%a4%a7%e5%88%86%e7%90%86%e7%b3%bb%e5%b0%82%e9%96%80\/\" class=\"more-link\">\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"vkexunit_cta_each_option":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-4737","post","type-post","status-publish","format-standard","hentry","category-1"],"_links":{"self":[{"href":"https:\/\/winroadrikeijyuku.com\/oita\/wp-json\/wp\/v2\/posts\/4737","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/winroadrikeijyuku.com\/oita\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/winroadrikeijyuku.com\/oita\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/winroadrikeijyuku.com\/oita\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/winroadrikeijyuku.com\/oita\/wp-json\/wp\/v2\/comments?post=4737"}],"version-history":[{"count":16,"href":"https:\/\/winroadrikeijyuku.com\/oita\/wp-json\/wp\/v2\/posts\/4737\/revisions"}],"predecessor-version":[{"id":4758,"href":"https:\/\/winroadrikeijyuku.com\/oita\/wp-json\/wp\/v2\/posts\/4737\/revisions\/4758"}],"wp:attachment":[{"href":"https:\/\/winroadrikeijyuku.com\/oita\/wp-json\/wp\/v2\/media?parent=4737"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/winroadrikeijyuku.com\/oita\/wp-json\/wp\/v2\/categories?post=4737"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/winroadrikeijyuku.com\/oita\/wp-json\/wp\/v2\/tags?post=4737"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}