{"id":4754,"date":"2025-08-20T10:00:34","date_gmt":"2025-08-20T01:00:34","guid":{"rendered":"https:\/\/winroadrikeijyuku.com\/oita\/?p=4754"},"modified":"2025-08-18T20:18:06","modified_gmt":"2025-08-18T11:18:06","slug":"%e6%95%b4%e6%95%b0%e5%95%8f%e9%a1%8c%e3%81%9d%e3%81%ae%ef%bc%92-%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","status":"publish","type":"post","link":"https:\/\/winroadrikeijyuku.com\/oita\/2025\/08\/20\/%e6%95%b4%e6%95%b0%e5%95%8f%e9%a1%8c%e3%81%9d%e3%81%ae%ef%bc%92-%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\/","title":{"rendered":"\u6574\u6570\u554f\u984c\u305d\u306e\uff12 | \u5927\u5206\u5e02 \u5927\u5b66\u53d7\u9a13 \u6570\u5b66 \u587e | \u5927\u5206\u7406\u7cfb\u5c02\u9580\u587eWINROAD"},"content":{"rendered":"

\u554f\u984c<\/p>\n

x\u3001y\u3001z\u306f\u200b\\( x\\leqq y \\leqq z \\)<\/span>\u200b\u3092\u6e80\u305f\u3059\u81ea\u7136\u6570\u3067\u6b21\u306e\u95a2\u4fc2\u5f0f\u3092\u6e80\u305f\u3059\u3002<\/p>\n

\u200b\\( \\dfrac{1}{x}+\\dfrac{1}{y}+\\dfrac{1}{z}=1 \\)<\/span>\u200b<\/p>\n

(1) \u200b\\( x\\leqq3 \\)<\/span>\u200b\u3067\u3042\u308b\u4e8b\u3092\u793a\u305b\u3002<\/p>\n

(2) \u81ea\u7136\u6570x\u3001y\u3001z\u306e\u7d44\u3092\u3059\u3079\u3066\u6c42\u3081\u3088\u3002<\/p>\n

\n

(1)\u307e\u305a\u306f\u5b9a\u756a\u3067\u3059\u306d<\/p>\n

\u200b\\( \\dfrac{1}{x}+\\dfrac{1}{y}+\\dfrac{1}{z}\\leqq \\dfrac{1}{x}+\\dfrac{1}{x}+\\dfrac{1}{x}=\\dfrac{3}{x} \\)<\/span>\u200b\u3088\u308a<\/p>\n

\u200b\\( 1\\leqq\\dfrac{3}{x} \\)<\/span>\u200b\u3088\u3063\u3066\\( x\\leqq3 \\)<\/span>\u200b<\/p>\n

(2) (1)\u3067\u200b\\( x=1\u30012\u30013 \\)<\/span>\u200b\u3068\u308f\u304b\u3063\u305f\u306e\u3067\u3059\u304b\u3089\u9806\u6b21\u8abf\u3079\u3066\u3044\u3051\u3070\u826f\u3044\u306e\u3067\u3059\u3002<\/p>\n

\u2460\u200b\\( x=1 \\)<\/span>\u200b\u306e\u3068\u304d<\/p>\n

\u200b\\( 1+\\dfrac{1}{y}+\\dfrac{1}{z}=1 \\)<\/span>\u200b\u306a\u306e\u3067\u200b\\( \\dfrac{1}{y}+\\dfrac{1}{z}=0 \\)<\/span>\u200b\u3068\u306a\u308a\u4e0d\u9069<\/p>\n

\u2461\u200b\\( x=2 \\)<\/span>\u200b\u306e\u3068\u304d<\/p>\n

\u200b\\( \\dfrac{1}{2}+\\dfrac{1}{y}+\\dfrac{1}{z}=1 \\)<\/span>\u200b\u306a\u306e\u3067\u200b\\( \\dfrac{1}{y}+\\dfrac{1}{z}=\\dfrac{1}{2} \\)<\/span>\u200b<\/p>\n

\u200b\\( \\dfrac{y+z}{yz}=\\dfrac{1}{2} \\)<\/span>\u200b\u3088\u308a\u200b\\( 2y+2z=yz \\)<\/span>\u200b<\/p>\n

\u200b\\( yz-2y-2z=0 \\)<\/span>\u200b<\/p>\n

\u200b\\( (y-2)(z-2)-4=0\u3064\u307e\u308a(y-2)(z-2)=4 \\)<\/span>\u200b\u200b\\( x\\leqq y \\leqq z \\)<\/span>\u200b\u306a\u306e\u3067<\/p>\n

\u200b\\( (y-2\u3001z-2)=(1\u30014)\u3001\uff082\u30012) \\)<\/span>\u200b\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n

\u3088\u3063\u3066(x\u3001y\u3001z)\uff1d(2\u30013\u30016)\u3001(2\u30014\u30014)\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n

\u2462\u200b\\( x=3 \\)<\/span>\u200b\u306e\u3068\u304d<\/p>\n

\u200b\\( \\dfrac{1}{3}+\\dfrac{1}{y}+\\dfrac{1}{z}=1 \\)<\/span>\u200b\u306a\u306e\u3067\u200b\\( \\dfrac{1}{y}+\\dfrac{1}{z}=\\dfrac{2}{3} \\)<\/span>\u200b<\/p>\n

\u200b\\( 3y+3z=2yz \\)<\/span>\u200b\u3064\u307e\u308a\u200b\\( 2yz-3y-3z=0 \\)<\/span>\u200b\u3053\u3053\u3067\u4e21\u8fba\u3092\uff12\u500d\u3057<\/p>\n

\u200b\\( 4yz-6y-6z=0 \\)<\/span>\u200b<\/p>\n

\u200b\\( (2y-3)(2z-3)-9=0 \\)<\/span>\u200b\u200b\u3001\\( (2y-3)(2z-3)=9 \\)<\/span>\u200b<\/p>\n

\u200b\\( (2y-3\u30012z-3)=(1\u30019)\u3001\uff083\u30013) \\)<\/span>\u200b\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n

\u200b\\( (2y-3\u30012z-3)=(1\u30019) \\)<\/span>\u200b\u306e\u3068\u304d\u306f(x\u3001y\u3001z)\uff1d(3\u30012\u30016)\u3068\u306a\u308a\u200b\u200b\\( x\\leqq y \\leqq z \\)<\/span>\u200b\u3088\u308a\u4e0d\u9069<\/p>\n

\u200b\\( (2y-3\u30012z-3)=(3\u30013) \\)<\/span>\u200b\u306e\u3068\u304d\u306f(x\u3001y\u3001z)\uff1d(3\u30013\u30013)\u3068\u306a\u308a\u3001\u3053\u308c\u306f\u200b\u200b\\( x\\leqq y \\leqq z \\)<\/span>\u200b\u3092\u6e80\u305f\u3059\u3002<\/p>\n

\u2460\u3001\u2461\u3001\u2462\u3088\u308a<\/p>\n

(x\u3001y\u3001z)\uff1d(2\u30013\u30016)\u3001(2\u30014\u30014)\u3001(3\u30013\u30013)<\/p>\n

 <\/p>\n

\uff08\u5927\u5206\u7406\u7cfb\u5c02\u9580\u587eWINROAD <\/span>\u9996\u85e4\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"

\u554f\u984c x\u3001y\u3001z\u306f\u200b\\( x\\leqq y \\leqq z \\)\u200b\u3092\u6e80\u305f\u3059\u81ea\u7136\u6570\u3067\u6b21\u306e\u95a2\u4fc2\u5f0f\u3092\u6e80\u305f\u3059\u3002 \u200b\\( \\dfrac{1}{x}+\\dfrac{1}{y}+\\dfrac{1}{z}=1 \\)\u200b (1) \u200b\\( x<\/p>\n

\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-4754","post","type-post","status-publish","format-standard","hentry","category-1"],"_links":{"self":[{"href":"https:\/\/winroadrikeijyuku.com\/oita\/wp-json\/wp\/v2\/posts\/4754","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=4754"}],"version-history":[{"count":4,"href":"https:\/\/winroadrikeijyuku.com\/oita\/wp-json\/wp\/v2\/posts\/4754\/revisions"}],"predecessor-version":[{"id":4759,"href":"https:\/\/winroadrikeijyuku.com\/oita\/wp-json\/wp\/v2\/posts\/4754\/revisions\/4759"}],"wp:attachment":[{"href":"https:\/\/winroadrikeijyuku.com\/oita\/wp-json\/wp\/v2\/media?parent=4754"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/winroadrikeijyuku.com\/oita\/wp-json\/wp\/v2\/categories?post=4754"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/winroadrikeijyuku.com\/oita\/wp-json\/wp\/v2\/tags?post=4754"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}