{"id":5140,"date":"2026-01-07T10:00:22","date_gmt":"2026-01-07T01:00:22","guid":{"rendered":"https:\/\/winroadrikeijyuku.com\/oita\/?p=5140"},"modified":"2026-01-06T16:11:04","modified_gmt":"2026-01-06T07:11:04","slug":"%e6%a1%81%e6%95%b0%e5%95%8f%e9%a1%8c-2012-%e6%9d%b1%e4%ba%ac%e5%b7%a5%e6%a5%ad%e5%a4%a7%e5%ad%a6-%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","status":"publish","type":"post","link":"https:\/\/winroadrikeijyuku.com\/oita\/2026\/01\/07\/%e6%a1%81%e6%95%b0%e5%95%8f%e9%a1%8c-2012-%e6%9d%b1%e4%ba%ac%e5%b7%a5%e6%a5%ad%e5%a4%a7%e5%ad%a6-%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\/","title":{"rendered":"\u6841\u6570\u554f\u984c  (2012 \u6771\u4eac\u5de5\u696d\u5927\u5b66)  | \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<span class=\"math inherit-color\">\\( log_{10}3=0.4771 \\)<\/span>\u200b\u3068\u3057\u3066\u3001\u200b<span class=\"math inherit-color \">\\( \\displaystyle\\sum_{n=0}^{99}3^{\\ n} \\)<\/span>\u200b\u306e\u6841\u6570\u3092\u6c42\u3081\u3088\u3002<\/p>\n<hr \/>\n<p><span style=\"color: #000080;\">\u307e\u305a\u200b<span class=\"math inherit-color\">\\( \\displaystyle\\sum_{n=0}^{99}3^{\\ n}=\\displaystyle\\sum_{n=1}^{100}3^{\\ n-1}=\\dfrac{1(3^{100}-1)}{3-1}=\\dfrac{3^{100}-1}{2} \\)<\/span>\u200b<\/span><\/p>\n<p><span style=\"color: #000080;\">\u3053\u3053\u3067\u76f4\u63a5\u3001\u5e38\u7528\u5bfe\u6570\u3092\u3068\u3063\u3066\u3082\u5024\u304c\u51fa\u305b\u307e\u305b\u3093\u3002<\/span><\/p>\n<p><span style=\"color: #000080;\">\u3053\u306e\u5834\u5408\u4e0d\u7b49\u5f0f\u3067\u631f\u3093\u3067\u5024\u306e\u7bc4\u56f2\u3092\u8abf\u3079\u308b\u3053\u3068\u306b\u3057\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"color: #000080;\">\u200b<span class=\"math inherit-color\">\\( 3^{100}-1&lt;3^{100} \\)<\/span>\u200b\u306a\u306e\u3067\u4e0a\u9650\u306f\u3059\u3050\u6c42\u307e\u308a\u307e\u3059\u304c\u3001\u4e0b\u9650\u304c\u554f\u984c\u3068\u306a\u308a\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"color: #000080;\">\u200b<span class=\"math inherit-color\">\\( 3^{100} \\)<\/span>\u200b\u306b\u6bd4\u3079\uff11\u306f\u5341\u5206\u306b\u5c0f\u3055\u3044\u306e\u3067\u200b<span class=\"math inherit-color\">\\( 3^{100} \\)<\/span>\u200b\u3092\u5229\u7528\u3057\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"color: #000080;\">\u200b<span class=\"math inherit-color\">\\( 3^{100}=3\\cdot3^{99}&gt;2\\cdot3^{99} \\)<\/span>\u200b<\/span><\/p>\n<p><span style=\"color: #000080;\">\u3057\u305f\u304c\u3063\u3066<\/span><\/p>\n<p><span style=\"color: #000080;\">\u200b<span class=\"math inherit-color\">\\( 2\\cdot3^{99}&lt;3^{100}-1&lt;3^{100} \\)<\/span>\u200b\u3068\u306a\u308a\u307e\u3059<\/span><\/p>\n<p><span style=\"color: #000080;\">\u200b<span class=\"math inherit-color\">\\( 3^{99}&lt;\\dfrac{3^{100}-1}{2}&lt;\\dfrac{3^{100}}{2} \\)<\/span>\u200b<\/span><\/p>\n<p><span style=\"color: #000080;\">\u5e38\u7528\u5bfe\u6570\u3092\u3068\u308b\u3068<\/span><\/p>\n<p><span style=\"color: #000080;\">\u200b<span class=\"math inherit-color\">\\( 99log_{10}3&lt;log_{10}\\dfrac{3^{100}-1}{2}&lt;100log_{10}3-log_{10}2&lt;100log_{10}3 \\)<\/span>\u200b<\/span><\/p>\n<p><span style=\"color: #000080;\">\u3064\u307e\u308a<\/span><\/p>\n<p><span style=\"color: #000080;\">\u200b<span class=\"math inherit-color\">\\( 99\\times0.4771&lt;log_{10}\\dfrac{3^{100}-1}{2}&lt;100\\times0.4771\\\\47.2329&lt;log_{10}\\dfrac{3^{100}-1}{2}&lt;47.71 \\)<\/span>\u200b<\/span><\/p>\n<p><span style=\"color: #000080;\">\u4ee5\u4e0a\u3088\u308a48\u6841\u3068\u3044\u3046\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/span><\/p>\n<p>&nbsp;<\/p>\n<p>\uff08\u5927\u5206\u7406\u7cfb\u5c02\u9580\u587e<span class=\"s1\">WINROAD <\/span>\u9996\u85e4)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u554f\u984c \u200b\\( log_{10}3=0.4771 \\)\u200b\u3068\u3057\u3066\u3001\u200b\\( \\displaystyle\\sum_{n=0}^{99}3^{\\ n} \\)\u200b\u306e\u6841\u6570\u3092\u6c42\u3081\u3088\u3002 \u307e\u305a\u200b\\( \\displaystyle\\sum_{n=<\/p>\n<p><a href=\"https:\/\/winroadrikeijyuku.com\/oita\/2026\/01\/07\/%e6%a1%81%e6%95%b0%e5%95%8f%e9%a1%8c-2012-%e6%9d%b1%e4%ba%ac%e5%b7%a5%e6%a5%ad%e5%a4%a7%e5%ad%a6-%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\/\" 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-5140","post","type-post","status-publish","format-standard","hentry","category-1"],"_links":{"self":[{"href":"https:\/\/winroadrikeijyuku.com\/oita\/wp-json\/wp\/v2\/posts\/5140","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=5140"}],"version-history":[{"count":4,"href":"https:\/\/winroadrikeijyuku.com\/oita\/wp-json\/wp\/v2\/posts\/5140\/revisions"}],"predecessor-version":[{"id":5144,"href":"https:\/\/winroadrikeijyuku.com\/oita\/wp-json\/wp\/v2\/posts\/5140\/revisions\/5144"}],"wp:attachment":[{"href":"https:\/\/winroadrikeijyuku.com\/oita\/wp-json\/wp\/v2\/media?parent=5140"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/winroadrikeijyuku.com\/oita\/wp-json\/wp\/v2\/categories?post=5140"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/winroadrikeijyuku.com\/oita\/wp-json\/wp\/v2\/tags?post=5140"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}