{"id":6587,"date":"2025-12-24T17:21:06","date_gmt":"2025-12-24T08:21:06","guid":{"rendered":"https:\/\/math-travel.com\/?p=6587"},"modified":"2026-02-11T17:23:12","modified_gmt":"2026-02-11T08:23:12","slug":"taisuu-henkan","status":"publish","type":"post","link":"https:\/\/math-travel.jp\/math-2\/taisuu-henkan\/","title":{"rendered":"\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306e\u899a\u3048\u65b9\u3068\u4f7f\u3044\u65b9\uff1alog\u306e\u5e95\u3092\u4f55\u306b\u63c3\u3048\u308b\u3079\u304d\u304b\u5224\u65ad\u57fa\u6e96\u3092\u89e3\u8aac"},"content":{"rendered":"\n<div class=\"wp-block-group has-border -border02 is-style-bg_grid\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div id=\"kv\">\n        <p>log<span class=\"log-bottom\">a<\/span>b \u306e\u5e95\u3092 c \u306b\u5909\u63db\u3057\u3066\u8a08\u7b97\u3057\u307e\u3059\u3002<br>\n        a, b, c \u3092\u5165\u529b\u5f8c\u3001\u7b97\u51fa\u30dc\u30bf\u30f3\u30af\u30ea\u30c3\u30af\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n      <\/div>\n      <div class=\"input-coefficient\">\n        <div class=\"number-item\">\n          <label>a:<\/label>\n          <input type=\"number\" name=\"a1\" class=\"a1\">\n        <\/div>\n        <div class=\"number-item\">\n          <label>b:<\/label>\n          <input type=\"number\" name=\"a2\" class=\"a2\">\n        <\/div>\n        <div class=\"number-item\">\n          <label>c:<\/label>\n          <input type=\"number\" name=\"a3\" class=\"a3\">\n        <\/div>\n      <\/div>\n      <div class=\"output\">\n        <p>\u5e95\u306e\u5909\u63db\u516c\u5f0f\uff1alog<span class=\"log-bottom\">a<\/span>b = <span class=\"fraction\"><span class=\"numerator\">log<span class=\"log-bottom\">c<\/span>b<\/span><span class=\"denominator\">log<span class=\"log-bottom\">c<\/span>a<\/span><\/span> \u3088\u308a\u3001<span class=\"sp\"><br><\/span>\n        log<span class=\"log-bottom coefficient-a\"><\/span><span class=\"coefficient-b\"><\/span> = <span class=\"fraction\"><span class=\"numerator\">log<span class=\"log-bottom coefficient-c\"><\/span><span class=\"coefficient-b\"><\/span><\/span><span class=\"denominator\">log<span class=\"log-bottom coefficient-c\"><\/span><span class=\"coefficient-a\"><\/span><\/span><\/span> = <span id=\"result\" class=\"bold\"><\/span><\/span>\u3068\u306a\u308b\u3002<\/p>\n      <\/div>\n      <div class=\"btn\">\n        <input type=\"button\" value=\"\u7b97\u51fa\" id=\"cal-btn\">\n        <input type=\"button\" value=\"\u30ea\u30bb\u30c3\u30c8\" id=\"reset-btn\">\n      <\/div>\n<\/div><\/div>\n\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-left\" data-col=\"gray\"><div class=\"c-balloon__icon -circle\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/math-travel.jp\/wp-content\/uploads\/2024\/05\/math-travel-hukidashi8-150x150.webp\" alt=\"\" class=\"c-balloon__iconImg\" width=\"80px\" height=\"80px\"><span class=\"c-balloon__iconName\">\u9ad8\u6821\u751f<\/span><\/div><div class=\"c-balloon__body -speaking -border-on\"><div class=\"c-balloon__text\">\n<p>\u8a08\u7b97\u306b\u56f0\u3063\u3066\u3044\u305f\u306e\u3067\u52a9\u304b\u308a\u307e\u3057\u305f\uff01<\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n\n<p>\u4eca\u56de\u306f\u5e95\u306e\u5909\u63db\u306b\u95a2\u3059\u308b\u60a9\u307f\u3092\u89e3\u6c7a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"is-style-bg_stripe\"><span class=\"huto\">\u300c\u5e95\u306e\u5909\u63db\u516c\u5f0f\u3092\u5fd8\u308c\u3066\u3057\u307e\u3063\u305f\u300d<br>\u300c\u5e95\u306e\u5909\u63db\u3092\u4f7f\u3063\u305f\u8a08\u7b97\u304c\u82e6\u624b\u300d<\/span><\/p>\n\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-left\" data-col=\"gray\"><div class=\"c-balloon__icon -circle\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/math-travel.jp\/wp-content\/uploads\/2024\/05\/math-travel-hukidashi5-150x150.webp\" alt=\"\" class=\"c-balloon__iconImg\" width=\"80px\" height=\"80px\"><span class=\"c-balloon__iconName\">\u9ad8\u6821\u751f<\/span><\/div><div class=\"c-balloon__body -speaking -border-on\"><div class=\"c-balloon__text\">\n<p>\u5bfe\u6570\u306e\u8a08\u7b97\u304c\u82e6\u624b\u3067\u2026<\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" width=\"500\" height=\"265\" src=\"https:\/\/math-travel.jp\/wp-content\/uploads\/2020\/05\/\u30aa\u30f3\u30e9\u30a4\u30f3\u6388\u696d2-e1639213338680.jpg\" alt=\"\u60a9\u3080\u5b66\u751f\" class=\"wp-image-7771\" srcset=\"https:\/\/math-travel.jp\/wp-content\/uploads\/2020\/05\/\u30aa\u30f3\u30e9\u30a4\u30f3\u6388\u696d2-e1639213338680.jpg 500w, https:\/\/math-travel.jp\/wp-content\/uploads\/2020\/05\/\u30aa\u30f3\u30e9\u30a4\u30f3\u6388\u696d2-e1639213338680-300x159.jpg 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/figure>\n<\/div>\n\n\n<p>\u5bfe\u6570\u306f\u5e95\u306e\u5024\u304c\u540c\u3058\u3067\u306a\u3044\u3068\u8a08\u7b97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<div class=\"wp-block-group is-style-bg_stripe\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p>\\[log_{2}3 + log_{4}3\\]<\/p>\n\n\n\n<p>\\[log_{2}3 \\cdot log_{3}8\\]<\/p>\n<\/div><\/div>\n\n\n\n<p>\u305d\u3053\u3067\u5bfe\u6570\u306e\u5e95\u3092\u90fd\u5408\u306e\u3088\u3044\u5024\u306b\u5909\u63db\u3067\u304d\u308b\u306e\u304c<span class=\"hutoaka\">\u300c\u5e95\u306e\u5909\u63db\u516c\u5f0f\u300d<\/span>\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"swell-block-capbox cap_box\"><div class=\"cap_box_ttl\"><span>\u5e95\u306e\u5909\u63db\u516c\u5f0f<\/span><\/div><div class=\"cap_box_content\">\n<p>\\(a,b,c>0\u3001a,c\u22601\\)\u306e\u3068\u304d<\/p>\n\n\n\n<p>\\[\\displaystyle log_{a}b=\\frac{log_{c}b}{log_{c}a}\\]<\/p>\n<\/div><\/div>\n\n\n\n<p>\u3053\u306e\u516c\u5f0f\u3092\u77e5\u3089\u306a\u3044\u3068\u89e3\u3051\u306a\u3044\u554f\u984c\u304c\u7d50\u69cb\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3082\u3057\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306b\u6163\u308c\u3066\u3044\u306a\u3044\u306a\u3089\u3070\u3001\u3044\u307e\u3059\u3050\u7fd2\u5f97\u3059\u308b\u3053\u3068\u3092\u304a\u3059\u3059\u3081\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u672c\u8a18\u4e8b\u3067\u306f<span class=\"hutoaka\">\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306b\u3064\u3044\u3066\u8a3c\u660e\u3084\u4f7f\u3044\u65b9\u3092\u89e3\u8aac<\/span>\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u69d8\u3005\u306a\u30d1\u30bf\u30fc\u30f3\u306e\u554f\u984c\u3092\u7528\u610f\u3057\u305f\u306e\u3067\u3001\u3053\u306e\u8a18\u4e8b\u3092\u8aad\u3093\u3067\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306b\u6163\u308c\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading st-css-no\" id=\"koushiki\">\u5e95\u306e\u5909\u63db\u516c\u5f0f<\/h2>\n\n\n\n<p>\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306f<span class=\"hutoaka\">\u5bfe\u6570log\u306e\u91cd\u8981\u306a\u516c\u5f0f\u306e1\u3064<\/span>\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"swell-block-capbox cap_box\"><div class=\"cap_box_ttl\"><span>\u5e95\u306e\u5909\u63db\u516c\u5f0f<\/span><\/div><div class=\"cap_box_content\">\n<p>\\(a,b,c>0\u3001a,c\u22601\\)\u306e\u3068\u304d<\/p>\n\n\n\n<p>\\[\\displaystyle log_{a}b=\\frac{log_{c}b}{log_{c}a}\\]<\/p>\n<\/div><\/div>\n\n\n\n<p>\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5bfe\u6570\u306e\u8a08\u7b97\u304c\u3042\u3063\u305f\u3068\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<div class=\"wp-block-group is-style-bg_stripe\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p>\u6b21\u306e\u8a08\u7b97\u3092\u6c42\u3081\u3088\u3046\u3002<\/p>\n\n\n\n<p>\\[\\displaystyle log_{2}3 \\cdot log_{3}4\\]<\/p>\n<\/div><\/div>\n\n\n\n<p>\u3053\u308c\u3089\u306f\u5bfe\u6570\u306e\u5e95\u304c\u7570\u306a\u308b\u306e\u3067\u3001\u3053\u306e\u307e\u307e\u3067\u306f\u7a4d\u3092\u6c42\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u305d\u3053\u3067\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306e\u51fa\u756a\u3067\u3059\u3002<\/p>\n\n\n\n<p>\\[\\displaystyle log_{3}4=\\frac{log_{2}4}{log_{2}3}=\\frac{2}{log_{2}3}\\]<\/p>\n\n\n\n<p>\u5e95\u306e\u5909\u63db\u516c\u5f0f\u3092\u4f7f\u3048\u3070\u3001\u5e95\u3092\u8a08\u7b97\u306e\u90fd\u5408\u304c\u3088\u3044\u5024\u306b\u5909\u63db\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u554f\u984c\u3067\u306f\u3001\u5bfe\u6570\u306e\u5e95\u30922\u306b\u5909\u63db\u3057\u3066\u7a4d\u3092\u6c42\u3081\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\\begin{eqnarray}<br>\\displaystyle log_{2}3 \\cdot log_{3}4&amp;=&amp;log_{2}3 \\cdot \\frac{2}{log_{2}3}\\\\<br>&amp;=&amp;2<br>\\end{eqnarray}<\/p>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306b\u5e95\u306e\u5909\u63db\u516c\u5f0f\u3092\u7528\u3044\u308b\u3053\u3068\u3067\u3001\u5bfe\u6570\u306e\u8a08\u7b97\u304c\u30b9\u30e0\u30fc\u30ba\u306b\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><span class=\"yellow-hoso\">\u975e\u5e38\u306b\u91cd\u8981\u306a\u516c\u5f0f\u306a\u306e\u3067\u5fc5\u305a\u899a\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/span><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" width=\"620\" height=\"251\" src=\"https:\/\/math-travel.jp\/wp-content\/uploads\/2021\/07\/\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306e\u899a\u3048\u65b9.png\" alt=\"\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306e\u899a\u3048\u65b9\" class=\"wp-image-6595\" srcset=\"https:\/\/math-travel.jp\/wp-content\/uploads\/2021\/07\/\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306e\u899a\u3048\u65b9.png 620w, https:\/\/math-travel.jp\/wp-content\/uploads\/2021\/07\/\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306e\u899a\u3048\u65b9-300x121.png 300w\" sizes=\"(max-width: 620px) 100vw, 620px\" \/><\/figure>\n<\/div>\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-right\" data-col=\"gray\"><div class=\"c-balloon__icon -circle\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/math-travel.jp\/wp-content\/uploads\/2024\/05\/math-travel-hukidashi1-150x150.webp\" alt=\"\" class=\"c-balloon__iconImg\" width=\"80px\" height=\"80px\"><span class=\"c-balloon__iconName\">\u30b7\u30fc\u30bf<\/span><\/div><div class=\"c-balloon__body -speaking -border-on\"><div class=\"c-balloon__text\">\n<p>\u96e3\u3057\u3044\u516c\u5f0f\u3067\u306f\u306a\u3044\u306e\u3067\u3001\u899a\u3048\u3066\u3057\u307e\u304a\u3046<\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-left\" data-col=\"gray\"><div class=\"c-balloon__icon -circle\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/math-travel.jp\/wp-content\/uploads\/2024\/05\/math-travel-hukidashi6-150x150.webp\" alt=\"\" class=\"c-balloon__iconImg\" width=\"80px\" height=\"80px\"><span class=\"c-balloon__iconName\">\u9ad8\u6821\u751f<\/span><\/div><div class=\"c-balloon__body -speaking -border-on\"><div class=\"c-balloon__text\">\n<p>\u3069\u3046\u3057\u3066\u5e95\u3092\u5909\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u3067\u3059\u304b\uff1f<\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n\n<h2 class=\"wp-block-heading\" id=\"syoumei\">\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306e\u8a3c\u660e<\/h2>\n\n\n\n<p><span class=\"huto\">\u5e95\u306e\u5909\u63db\u516c\u5f0f\u304c\u6210\u308a\u7acb\u3064\u3053\u3068\u306e\u8a3c\u660e\u3092\u3057\u307e\u3059\u3002<\/span><\/p>\n\n\n\n<p>\u306a\u305c\u5e95\u3092\u5909\u63db\u3067\u304d\u308b\u306e\u304b\u3001\u305d\u306e\u4ed5\u7d44\u307f\u3092\u7406\u89e3\u3057\u3066\u304a\u304f\u3053\u3068\u3067\u5fdc\u7528\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\\(a\\)\u3092\u5e95\u3068\u3059\u308b\u5bfe\u6570\\(log_{a}b\\)\u3092\u3001\\(c\\)\u3092\u5e95\u3068\u3059\u308b\u5bfe\u6570\u3067\u8868\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\\(log_{a}b=p\\)\u3068\u3059\u308b\u3068\u3001\u3000\\(b=a^{p}\\)<\/p>\n\n\n\n<p>\u3053\u3053\u3067\\(c\\)\u3092\u5e95\u3068\u3059\u308b\u5bfe\u6570\u3092\u3068\u308b\u3068\u3001<\/p>\n\n\n\n<p>\\[log_{c}b=plog_{c}a\\]<\/p>\n\n\n\n<p>\\(a\u22601\\)\u3088\u308a\u3001\\(log_{c}a\u22600\\)\u306a\u306e\u3067<\/p>\n\n\n\n<p>\\[\\displaystyle p=\\frac{log_{c}b}{log_{c}a}\\]<\/p>\n\n\n\n<p>\u3057\u305f\u304c\u3063\u3066\u3001\u5e95\u306e\u5909\u63db\u516c\u5f0f\u3092\u793a\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p><span class=\"yellow-hoso\">\u30dd\u30a4\u30f3\u30c8\u306f\u5bfe\u6570\u3067\u8868\u3057\u3066\u3044\u305f\\(log_{a}b=p\\)\u3092\u3001\\(b=a^{p}\\)\u306b\u5909\u5f62\u3059\u308b\u3068\u3053\u308d\u3067\u3059\u3002<\/span><\/p>\n\n\n\n<p>\u5bfe\u6570\u8868\u8a18\u304b\u3089\u6307\u6570\u8868\u8a18\u3078\u3068\u30b9\u30e0\u30fc\u30ba\u306b\u5909\u3048\u3089\u308c\u308b\u3088\u3046\u306b\u6163\u308c\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-right\" data-col=\"gray\"><div class=\"c-balloon__icon -circle\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/math-travel.jp\/wp-content\/uploads\/2024\/05\/math-travel-hukidashi1-150x150.webp\" alt=\"\" class=\"c-balloon__iconImg\" width=\"80px\" height=\"80px\"><span class=\"c-balloon__iconName\">\u30b7\u30fc\u30bf<\/span><\/div><div class=\"c-balloon__body -speaking -border-on\"><div class=\"c-balloon__text\">\n<p>c\u3092\u5e95\u3068\u3059\u308b\u5bfe\u6570\u3092\u3068\u308b\u306e\u304c\u30dd\u30a4\u30f3\u30c8\u3060\u306d<\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n\n<h2 class=\"wp-block-heading\" id=\"kotu\">\u5e95\u3092\u5909\u63db\u3059\u308b\u3068\u304d\u306e\u30b3\u30c4<\/h2>\n\n\n\n<p>\u300c\u5909\u63db\u516c\u5f0f\u306f\u77e5\u3063\u3066\u3044\u308b\u3051\u308c\u3069\u3001\u5e95\u3092\u4f55\u306b\u5909\u63db\u3059\u308c\u3070\u826f\u3044\u306e\u304b\u5206\u304b\u3089\u306a\u3044\u3002\u300d<\/p>\n\n\n\n<p>\u304d\u3063\u3068\u3001\u3053\u3093\u306a\u65b9\u3082\u591a\u3044\u3067\u3059\u3088\u306d\u3002<\/p>\n\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-left\" data-col=\"gray\"><div class=\"c-balloon__icon -circle\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/math-travel.jp\/wp-content\/uploads\/2024\/05\/math-travel-hukidashi5-150x150.webp\" alt=\"\" class=\"c-balloon__iconImg\" width=\"80px\" height=\"80px\"><span class=\"c-balloon__iconName\">\u9ad8\u6821\u751f<\/span><\/div><div class=\"c-balloon__body -speaking -border-on\"><div class=\"c-balloon__text\">\n<p>\u516c\u5f0f\u306f\u5206\u304b\u308b\u3051\u3069\u3001\u5f0f\u5909\u5f62\u304c\u601d\u3044\u3064\u304b\u306a\u3044\u3067\u3059\u2026<\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n\n<p>\u5e95\u3092\u5909\u63db\u3059\u308b\u3068\u304d\u306e\u30b3\u30c4\u306f<span class=\"hutoaka\">\u300c\u5e95\u3092\u540c\u3058\u306b\u3059\u308b\u300d<\/span>\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u5e95\u304c\u540c\u3058\u3067\u3042\u308c\u3070\u5bfe\u6570\u3067\u3082\u8a08\u7b97\u3067\u304d\u308b\u306e\u3067\u3001<span class=\"yellow-hoso\">\u5e95\u304c\u540c\u3058\u306b\u306a\u308b\u3088\u3046\u306b\u5909\u63db\u516c\u5f0f\u3092\u4f7f\u3044\u307e\u3057\u3087\u3046\u3002<\/span><\/p>\n\n\n\n<p>\u3053\u306e\u3068\u304d\u3001\u5e95\u3092\u4f55\u306b\u3057\u306a\u3044\u3068\u89e3\u3051\u306a\u3044\u306a\u3093\u3066\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u305f\u3060\u3001\u5e95\u306f\u554f\u984c\u306e\u306a\u304b\u306e\u5bfe\u6570\u306b\u305d\u308d\u3048\u308b\u3068\u3001\u8a08\u7b97\u304c\u30b9\u30e0\u30fc\u30ba\u306b\u306a\u308b\u5834\u5408\u304c\u591a\u3044\u3067\u3059\u3002<\/p>\n\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-left\" data-col=\"gray\"><div class=\"c-balloon__icon -circle\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/math-travel.jp\/wp-content\/uploads\/2024\/05\/math-travel-hukidashi7-150x150.webp\" alt=\"\" class=\"c-balloon__iconImg\" width=\"80px\" height=\"80px\"><span class=\"c-balloon__iconName\">\u9ad8\u6821\u751f<\/span><\/div><div class=\"c-balloon__body -speaking -border-on\"><div class=\"c-balloon__text\">\n<p>\u554f\u984c\u306b\u542b\u307e\u308c\u3066\u3044\u308b\u5bfe\u6570\u306e\u5e95\u3067\u5408\u308f\u305b\u308b\u306e\u304c\u826f\u3044\u3093\u3067\u3059\u306d\uff01<\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-right\" data-col=\"gray\"><div class=\"c-balloon__icon -circle\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/math-travel.jp\/wp-content\/uploads\/2024\/05\/math-travel-hukidashi1-150x150.webp\" alt=\"\" class=\"c-balloon__iconImg\" width=\"80px\" height=\"80px\"><span class=\"c-balloon__iconName\">\u30b7\u30fc\u30bf<\/span><\/div><div class=\"c-balloon__body -speaking -border-on\"><div class=\"c-balloon__text\">\n<p>\u3042\u307e\u308a\u306b\u3082\u5909\u306a\u5e95\u306b\u3059\u308b\u3068\u3001\u305d\u306e\u3042\u3068\u8a08\u7b97\u304c\u5927\u5909\u306b\u306a\u308b\u306e\u3067\u6ce8\u610f\u3067\u3059<\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n\n<h2 class=\"wp-block-heading st-css-no\" id=\"henkan\">\u5e95\u306e\u5909\u63db\u516c\u5f0f\u3092\u4f7f\u3063\u305f\u554f\u984c<\/h2>\n\n\n\n<p><span class=\"huto\">\u5e95\u306e\u5909\u63db\u516c\u5f0f\u3092\u4f7f\u3063\u305f\u554f\u984c\u30923\u3064\u89e3\u8aac\u3057\u307e\u3059\u3002<\/span><\/p>\n\n\n\n<div class=\"swell-block-capbox cap_box\"><div class=\"cap_box_ttl\"><span>\u5e95\u306e\u5909\u63db\u516c\u5f0f\u3092\u4f7f\u3063\u305f\u554f\u984c<\/span><\/div><div class=\"cap_box_content\">\n<ol class=\"wp-block-list\">\n<li>\u5bfe\u6570\u306e\u7a4d\u3092\u6c42\u3081\u308b\u554f\u984c<\/li>\n\n\n\n<li>\u771f\u6570\u306b\u30eb\u30fc\u30c8\u3092\u542b\u3080\u554f\u984c<\/li>\n\n\n\n<li>\u5206\u6bcd\u30fb\u5206\u5b50\u306e\u5e95\u304c\u7570\u306a\u308b\u554f\u984c<\/li>\n<\/ol>\n<\/div><\/div>\n\n\n\n<p>\u5bfe\u6570\u306e\u3088\u304f\u3042\u308b\u554f\u984c\u3092\u9078\u3093\u3060\u306e\u3067\u3001\u305d\u308c\u305e\u308c\u306e\u89e3\u304d\u65b9\u3092\u899a\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-right\" data-col=\"gray\"><div class=\"c-balloon__icon -circle\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/math-travel.jp\/wp-content\/uploads\/2024\/05\/math-travel-hukidashi1-150x150.webp\" alt=\"\" class=\"c-balloon__iconImg\" width=\"80px\" height=\"80px\"><span class=\"c-balloon__iconName\">\u30b7\u30fc\u30bf<\/span><\/div><div class=\"c-balloon__body -speaking -border-on\"><div class=\"c-balloon__text\">\n<p>\u3053\u308c\u3089\u306e\u8907\u5408\u554f\u984c\u304c\u51fa\u308b\u3053\u3068\u3082\u3042\u308b\u3088<\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n\n<h3 class=\"wp-block-heading\">\u5bfe\u6570\u306e\u7a4d\u3092\u6c42\u3081\u308b\u554f\u984c<\/h3>\n\n\n\n<div class=\"swell-block-capbox cap_box\"><div class=\"cap_box_ttl\"><span>\u5bfe\u6570\u306e\u7a4d<\/span><\/div><div class=\"cap_box_content\">\n<p>\u6b21\u306e\u5f0f\u3092\u7c21\u5358\u306b\u3057\u3088\u3046\u3002<\/p>\n\n\n\n<p>\\[log_{2}3 \\cdot log_{3}8\\]<\/p>\n<\/div><\/div>\n\n\n\n<p>\u3053\u306e\u307e\u307e\u3067\u306f\u898b\u305f\u76ee\u304c\u60aa\u3044\u306e\u3067\u3001\u5e95\u306e\u5909\u63db\u516c\u5f0f\u3092\u7528\u3044\u3066\u7c21\u5358\u306a\u5f0f\u306b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\\begin{eqnarray}<br>\\displaystyle log_{2}3 \\cdot log_{3}8&amp;=&amp;log_{2}3 \\times \\frac{log_{2}8}{log_{2}3}\\\\<br>&amp;=&amp;log_{2}8\\\\<br>&amp;=&amp;log_{2}2^{3}\\\\<br>&amp;=&amp;3<br>\\end{eqnarray}<\/p>\n\n\n\n<p>\u3053\u308c\u3067\u7c21\u5358\u306b\u8868\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u5909\u63db\u3059\u308b\u3068\u304d\u306e\u30dd\u30a4\u30f3\u30c8\u306f<span class=\"hutoaka\">\u300c\u5e95\u3092\u540c\u3058\u306b\u3059\u308b\u300d<\/span>\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u554f\u984c\u306b\u306f\\(log_{2}3\\)\u3068\\(log_{3}8\\)\u304c\u3042\u308a\u3001\u5e95\u30922\u304b3\u306e\u3069\u3061\u3089\u306b\u5408\u308f\u305b\u308b\u304b\u8ff7\u3044\u307e\u3059\u306d\u3002<\/p>\n\n\n\n<p>\\(log_{3}8\\)\u3092\\(log_{2}8\\)\u306b\u3067\u304d\u308b\u3068\u8a08\u7b97\u304c\u697d\u305d\u3046\u306a\u306e\u3067\u3001\u4eca\u56de\u306f\u5e95\u304c2\u306b\u306a\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-left\" data-col=\"gray\"><div class=\"c-balloon__icon -circle\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/math-travel.jp\/wp-content\/uploads\/2024\/05\/math-travel-hukidashi7-150x150.webp\" alt=\"\" class=\"c-balloon__iconImg\" width=\"80px\" height=\"80px\"><span class=\"c-balloon__iconName\">\u9ad8\u6821\u751f<\/span><\/div><div class=\"c-balloon__body -speaking -border-on\"><div class=\"c-balloon__text\">\n<p>\u5e95\u3092\u3044\u304f\u3064\u306b\u5909\u63db\u3059\u308b\u304b\u3082\u5927\u4e8b\u306a\u3093\u3067\u3059\u306d\uff01<\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-right\" data-col=\"gray\"><div class=\"c-balloon__icon -circle\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/math-travel.jp\/wp-content\/uploads\/2024\/05\/math-travel-hukidashi1-150x150.webp\" alt=\"\" class=\"c-balloon__iconImg\" width=\"80px\" height=\"80px\"><span class=\"c-balloon__iconName\">\u30b7\u30fc\u30bf<\/span><\/div><div class=\"c-balloon__body -speaking -border-on\"><div class=\"c-balloon__text\">\n<p>\u8a08\u7b97\u304c\u3068\u3066\u3082\u7c21\u5358\u306b\u306a\u308b\u3053\u3068\u304c\u591a\u3044\u3088<\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n\n<h3 class=\"wp-block-heading\">\u771f\u6570\u306b\u30eb\u30fc\u30c8\u3092\u542b\u3080\u554f\u984c<\/h3>\n\n\n\n<p>\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u771f\u6570\u306b\u30eb\u30fc\u30c8\u3092\u542b\u3080\u554f\u984c\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"swell-block-capbox cap_box\"><div class=\"cap_box_ttl\"><span>\u30eb\u30fc\u30c8\u3092\u542b\u3080\u554f\u984c<\/span><\/div><div class=\"cap_box_content\">\n<p>\u6b21\u306e\u5f0f\u3092\u7c21\u5358\u306b\u3057\u3088\u3046\u3002<\/p>\n\n\n\n<p>\\[log_{9}\\sqrt{27}\\]<\/p>\n<\/div><\/div>\n\n\n\n<p>\u30eb\u30fc\u30c8\u304c\u3042\u308b\u3068\u62d2\u7d76\u53cd\u5fdc\u304c\u51fa\u3066\u3057\u307e\u3046\u4eba\u3082\u3044\u307e\u3059\u3088\u306d\u3002<\/p>\n\n\n\n<p>\u307e\u305a\u306f\u4ee5\u4e0b\u306e\u516c\u5f0f\u3092\u78ba\u5b9f\u306b\u899a\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<div class=\"swell-block-capbox cap_box\"><div class=\"cap_box_ttl\"><span>\u6307\u6570\u6cd5\u5247\u30eb\u30fc\u30c8<\/span><\/div><div class=\"cap_box_content\">\n<p>\\[\\displaystyle \\sqrt{a}=a^{\\frac{1}{2}}\\]<\/p>\n<\/div><\/div>\n\n\n\n<p>\u3059\u308b\u3068\u3001\u4e0e\u3048\u3089\u308c\u305f\u5f0f\u306f<\/p>\n\n\n\n<p>\\[log_{9}\\sqrt{27}=log_{9}27^{\\frac{1}{2}}\\]<\/p>\n\n\n\n<p>\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u3053\u304b\u3089\u306f\u5e95\u306e\u5909\u63db\u516c\u5f0f\u3092\u4f7f\u3063\u3066\u3001\u5f0f\u3092\u7c21\u5358\u306b\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p class=\"is-style-bg_stripe\">\\begin{eqnarray}<br>\\displaystyle log_{9}\\sqrt{27}&amp;=&amp;log_{9}27^{\\frac{1}{2}}\\\\<br>&amp;=&amp;\\frac{1}{2}log_{9}27\\\\<br>\\displaystyle &amp;=&amp;\\frac{1}{2} \\cdot \\frac{log_{3}27}{log_{3}9}\\\\<br>\\displaystyle &amp;=&amp;\\frac{1}{2} \\cdot \\frac{3}{2}\\\\<br>\\displaystyle &amp;=&amp;\\frac{3}{4}<br>\\end{eqnarray}<\/p>\n\n\n\n<p>\u5e95\u30923\u306b\u5909\u63db\u3059\u308b\u3053\u3068\u3067\u304b\u306a\u308a\u8a08\u7b97\u304c\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-right\" data-col=\"gray\"><div class=\"c-balloon__icon -circle\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/math-travel.jp\/wp-content\/uploads\/2024\/05\/math-travel-hukidashi1-150x150.webp\" alt=\"\" class=\"c-balloon__iconImg\" width=\"80px\" height=\"80px\"><span class=\"c-balloon__iconName\">\u30b7\u30fc\u30bf<\/span><\/div><div class=\"c-balloon__body -speaking -border-on\"><div class=\"c-balloon__text\">\n<p>\u30eb\u30fc\u30c8\u304c\u3042\u3063\u3066\u3082\u6050\u308c\u308b\u5fc5\u8981\u306f\u306a\u3044\u3088\uff01<\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n\n<h3 class=\"wp-block-heading\">\u5206\u6bcd\u3068\u5206\u5b50\u306e\u5e95\u304c\u7570\u306a\u308b\u554f\u984c<\/h3>\n\n\n\n<div class=\"swell-block-capbox cap_box\"><div class=\"cap_box_ttl\"><span>\u5206\u6570\u306e\u554f\u984c<\/span><\/div><div class=\"cap_box_content\">\n<p>\u6b21\u306e\u5f0f\u3092\u7c21\u5358\u306b\u3057\u3088\u3046\u3002<\/p>\n\n\n\n<p>\\[\\displaystyle \\frac{log_{2}5}{log_{3}5}\\]<\/p>\n<\/div><\/div>\n\n\n\n<p>\u3053\u308c\u306f\u5206\u6bcd\u30fb\u5206\u5b50\u306e\u5e95\u304c\u7570\u306a\u308b\u306e\u3067\u3001\u3053\u306e\u307e\u307e\u3067\u306f\u4f55\u3082\u3067\u304d\u305d\u3046\u306b\u3042\u308a\u307e\u305b\u3093\u3001<\/p>\n\n\n\n<p>\u305d\u3053\u3067\u5e95\u306e\u5909\u63db\u516c\u5f0f\u3092\u7528\u3044\u3066\u3001\u5206\u6bcd\u30fb\u5206\u5b50\u306e\u5e95\u3092\u540c\u3058\u306b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\\begin{eqnarray}<br>\\displaystyle \\frac{log_{2}5}{log_{3}5}&amp;=&amp;log_{2}5 \\cdot \\frac{1}{log_{3}5}\\\\<br>\\displaystyle &amp;=&amp;log_{2}5 \\cdot \\frac{1}{\\frac{log_{2}5}{log_{2}3}}\\\\<br>\\displaystyle &amp;=&amp;log_{2}5 \\cdot \\frac{log_{2}3}{log_{2}5}\\\\<br>\\displaystyle &amp;=&amp;log_{2}3\\\\<br>\\end{eqnarray}<\/p>\n\n\n\n<p>\u5206\u6bcd\u30fb\u5206\u5b50\u304c\u5bfe\u6570\u306e\u3068\u304d\u306f\u3001\u5e95\u306e\u5909\u63db\u516c\u5f0f\u3092\u4f7f\u3063\u3066\u7c21\u5358\u306b\u3059\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading st-css-no\" id=\"mondai\">\u5e95\u306e\u5909\u63db\u516c\u5f0f\u300a\u7df4\u7fd2\u554f\u984c\u300b<\/h2>\n\n\n\n<p>\u5e95\u306e\u5909\u63db\u516c\u5f0f\u3092\u4f7f\u3063\u3066\u7df4\u7fd2\u554f\u984c\u306b\u6311\u6226\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u304c\u4eca\u56de\u306e\u7df4\u7fd2\u554f\u984c\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"swell-block-capbox cap_box\"><div class=\"cap_box_ttl\"><span>\u7df4\u7fd2\u554f\u984c<\/span><\/div><div class=\"cap_box_content\">\n<p>\u6b21\u306e\u8a08\u7b97\u3092\u3057\u3066\u307f\u3088\u3046\u3002<\/p>\n\n\n\n<p>(1)\\(log_{2}3 \\cdot log_{3}4 \\cdot log_{4}5\\)<\/p>\n\n\n\n<p>(2)\\(log_{4}\\sqrt{8}\\)<\/p>\n\n\n\n<p>(3)\\(\\displaystyle \\frac{3}{log_{9}3}\\)<\/p>\n<\/div><\/div>\n\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-right\" data-col=\"gray\"><div class=\"c-balloon__icon -circle\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/math-travel.jp\/wp-content\/uploads\/2024\/05\/math-travel-hukidashi1-150x150.webp\" alt=\"\" class=\"c-balloon__iconImg\" width=\"80px\" height=\"80px\"><span class=\"c-balloon__iconName\">\u30b7\u30fc\u30bf<\/span><\/div><div class=\"c-balloon__body -speaking -border-on\"><div class=\"c-balloon__text\">\n<p>\u982d\u306e\u4e2d\u3067\u65b9\u91dd\u3092\u8003\u3048\u308b\u3060\u3051\u3067\u3082\u7df4\u7fd2\u306b\u306a\u308b\u3088<\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n\n<h3 class=\"wp-block-heading\">\u7df4\u7fd2\u554f\u984c1\u306e\u89e3\u8aac<\/h3>\n\n\n\n<p>\u305d\u308c\u3067\u306f\u7df4\u7fd2\u554f\u984c\u306e\u89e3\u8aac\u3092\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<div class=\"swell-block-capbox cap_box\"><div class=\"cap_box_ttl\"><span>\u7df4\u7fd2\u554f\u984c<\/span><\/div><div class=\"cap_box_content\">\n<p>\u6b21\u306e\u8a08\u7b97\u3092\u3057\u3066\u307f\u3088\u3046\u3002<\/p>\n\n\n\n<p>(1)\\(log_{2}3 \\cdot log_{3}4 \\cdot log_{4}5\\)<\/p>\n<\/div><\/div>\n\n\n\n<p>\u3053\u308c\u306f\u5e95\u306e\u5909\u63db\u516c\u5f0f\u3092\u6d3b\u7528\u3059\u308b\u5178\u578b\u7684\u306a\u554f\u984c\u3067\u3059\u3002<\/p>\n\n\n\n<p>\\begin{eqnarray}<br>&amp;&amp;log_{2}3 \\cdot log_{3}4 \\cdot log_{4}5\\\\<br>&amp;=&amp;log_{2}3 \\cdot \\dfrac{log_{2}4}{log_{2}3} \\cdot \\dfrac{log_{2}5}{log_{2}4}\\\\<br>&amp;=&amp;log_{2}5<br>\\end{eqnarray}<\/p>\n\n\n\n<p>\u3053\u306e\u30bf\u30a4\u30d7\u306e\u554f\u984c\u306f\u3059\u3050\u306b\u624b\u304c\u52d5\u304b\u305b\u308b\u3088\u3046\u306b\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-right\" data-col=\"gray\"><div class=\"c-balloon__icon -circle\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/math-travel.jp\/wp-content\/uploads\/2024\/05\/math-travel-hukidashi1-150x150.webp\" alt=\"\" class=\"c-balloon__iconImg\" width=\"80px\" height=\"80px\"><span class=\"c-balloon__iconName\">\u30b7\u30fc\u30bf<\/span><\/div><div class=\"c-balloon__body -speaking -border-on\"><div class=\"c-balloon__text\">\n<p>\u5e95\u306e\u7570\u306a\u308b\u5bfe\u6570\u306e\u304b\u3051\u7b97\u304c\u76ee\u5370\u3067\u3059<\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n\n<h3 class=\"wp-block-heading\">\u7df4\u7fd2\u554f\u984c2\u306e\u89e3\u8aac<\/h3>\n\n\n\n<div class=\"swell-block-capbox cap_box\"><div class=\"cap_box_ttl\"><span>\u7df4\u7fd2\u554f\u984c<\/span><\/div><div class=\"cap_box_content\">\n<p>\u6b21\u306e\u5f0f\u3092\u7c21\u5358\u306b\u3057\u3088\u3046\u3002<\/p>\n\n\n\n<p>(2)\\(log_{4}\\sqrt{8}\\)<\/p>\n<\/div><\/div>\n\n\n\n<p>\u771f\u6570\u306b\u30eb\u30fc\u30c8\u304c\u3042\u308b\u30bf\u30a4\u30d7\u306e\u554f\u984c\u3067\u3059\u3002<\/p>\n\n\n\n<p>\\begin{eqnarray}<br>log_{4}\\sqrt{8}&amp;=&amp;log_{4}8^{\\frac{1}{2}}\\\\<br>\\displaystyle &amp;=&amp;\\frac{1}{2}log_{4}8<br>\\end{eqnarray}<\/p>\n\n\n\n<p>\u30eb\u30fc\u30c8\u304c\u3044\u306a\u304f\u306a\u3063\u305f\u3068\u3053\u308d\u3067\u3001\u3055\u3089\u306b\u5f0f\u3092\u7c21\u5358\u306b\u3057\u3066\u3044\u304d\u307e\u3059<\/p>\n\n\n\n<p>\\begin{eqnarray}<br>&amp;=&amp;\\frac{1}{2}log_{4}8\\\\<br>\\displaystyle &amp;=&amp;\\frac{1}{2}log_{4}2^{3}\\\\<br>\\displaystyle &amp;=&amp;\\frac{3}{2}log_{4}2<br>\\end{eqnarray}<\/p>\n\n\n\n<p>\u3053\u308c\u3067\u5b8c\u6210\u306b\u898b\u3048\u307e\u3059\u304c\u3001\u5b9f\u306f\u3082\u3063\u3068\u7c21\u5358\u306b\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\\begin{eqnarray}<br>\\displaystyle &amp;=&amp;\\frac{3}{2}log_{4}2\\\\<br>\\displaystyle &amp;=&amp;\\frac{3}{2} \\cdot \\frac{log_{2}2}{log_{2}4}\\\\<br>\\displaystyle &amp;=&amp;\\frac{3}{2} \\cdot \\frac{1}{2}\\\\<br>\\displaystyle &amp;=&amp;\\frac{3}{4}<br>\\end{eqnarray}<\/p>\n\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-left\" data-col=\"gray\"><div class=\"c-balloon__icon -circle\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/math-travel.jp\/wp-content\/uploads\/2024\/05\/math-travel-hukidashi7-150x150.webp\" alt=\"\" class=\"c-balloon__iconImg\" width=\"80px\" height=\"80px\"><span class=\"c-balloon__iconName\">\u9ad8\u6821\u751f<\/span><\/div><div class=\"c-balloon__body -speaking -border-on\"><div class=\"c-balloon__text\">\n<p>\u3053\u3093\u306a\u306b\u7c21\u5358\u306a\u5f62\u306b\u306a\u308a\u307e\u3057\u305f\uff01<\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-right\" data-col=\"gray\"><div class=\"c-balloon__icon -circle\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/math-travel.jp\/wp-content\/uploads\/2024\/05\/math-travel-hukidashi1-150x150.webp\" alt=\"\" class=\"c-balloon__iconImg\" width=\"80px\" height=\"80px\"><span class=\"c-balloon__iconName\">\u30b7\u30fc\u30bf<\/span><\/div><div class=\"c-balloon__body -speaking -border-on\"><div class=\"c-balloon__text\">\n<p>\u307e\u3060\u5909\u5f62\u3067\u304d\u306a\u3044\u304b\u3092\u8003\u3048\u308b\u3088\u3046\u306b\u3057\u3088\u3046\uff01<\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n\n<h3 class=\"wp-block-heading\">\u7df4\u7fd2\u554f\u984c3\u306e\u89e3\u8aac<\/h3>\n\n\n\n<p>\u6700\u5f8c\u306f\u5bfe\u6570\u3092\u542b\u3080\u5206\u6570\u306e\u554f\u984c\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"swell-block-capbox cap_box\"><div class=\"cap_box_ttl\"><span>\u7df4\u7fd2\u554f\u984c<\/span><\/div><div class=\"cap_box_content\">\n<p>\u6b21\u306e\u8a08\u7b97\u3092\u3057\u3066\u307f\u3088\u3046\u3002<\/p>\n\n\n\n<p>(3)\\(\\displaystyle \\frac{3}{log_{9}3}\\)<\/p>\n<\/div><\/div>\n\n\n\n<p>\u5206\u6bcd\u3092\u5e95\u30923\u3068\u3059\u308b\u5bfe\u6570\u306b\u5909\u63db\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\\begin{eqnarray}<br>\\displaystyle \\frac{3}{log_{9}3}&amp;=&amp;\\frac{3}{\\frac{log_{3}3}{log_{3}9}}\\\\<br>\\displaystyle &amp;=&amp;3 \\cdot \\frac{2}{1}\\\\<br>&amp;=&amp;6<br>\\end{eqnarray}<\/p>\n\n\n\n<p>\\(\\log_{9}3\\)\u3084\\(log_{4}2\\)\u306e\u3088\u3046\u306a\u3001\u5e95\u304c\u771f\u6570\u306e\u7d2f\u4e57\u306b\u306a\u3063\u3066\u3044\u308b\u3068\u304d<\/p>\n\n\n\n<p>\\[\\displaystyle log_{9}3=\\frac{1}{2}\\]<\/p>\n\n\n\n<p>\\[\\displaystyle log_{4}2=\\frac{1}{2}\\]<\/p>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306b\u7c21\u5358\u306a\u5f62\u3067\u8868\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-left\" data-col=\"gray\"><div class=\"c-balloon__icon -circle\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/math-travel.jp\/wp-content\/uploads\/2024\/05\/math-travel-hukidashi7-150x150.webp\" alt=\"\" class=\"c-balloon__iconImg\" width=\"80px\" height=\"80px\"><span class=\"c-balloon__iconName\">\u9ad8\u6821\u751f<\/span><\/div><div class=\"c-balloon__body -speaking -border-on\"><div class=\"c-balloon__text\">\n<p>\u3053\u308c\u306a\u3089\u6c17\u4ed8\u304d\u305d\u3046\u3060\u3057\u4fbf\u5229\u3067\u3059\u306d\uff01<\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n\n<h2 class=\"wp-block-heading\" id=\"matome\">\u5e95\u306e\u5909\u63db\u516c\u5f0f\u3000\u307e\u3068\u3081<\/h2>\n\n\n\n<p><span class=\"huto\">\u4eca\u56de\u306f\u5bfe\u6570log\u306b\u304a\u3051\u308b\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306b\u3064\u3044\u3066\u307e\u3068\u3081\u307e\u3057\u305f\u3002<\/span><\/p>\n\n\n\n<div class=\"swell-block-capbox cap_box\"><div class=\"cap_box_ttl\"><span>\u5e95\u306e\u5909\u63db\u516c\u5f0f<\/span><\/div><div class=\"cap_box_content\">\n<p>\\(a,b,c>0\u3001a,c\u22601\\)\u306e\u3068\u304d<\/p>\n\n\n\n<p>\\[\\displaystyle log_{a}b=\\frac{log_{c}b}{log_{c}a}\\]<\/p>\n<\/div><\/div>\n\n\n\n<p>\u5e95\u3092\u5909\u63db\u3059\u308b\u3068\u304d\u306e\u30b3\u30c4\u306f<span class=\"hutoaka\">\u300c\u5e95\u3092\u540c\u3058\u306b\u3059\u308b\u3053\u3068\u300d<\/span>\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3069\u3046\u5909\u63db\u3057\u3066\u3044\u3044\u306e\u304b\u5206\u304b\u3089\u306a\u3044\u3068\u304d\u306f\u3001\u5bfe\u6570\u306e\u5e95\u304c\u540c\u3058\u306b\u306a\u308b\u3088\u3046\u306b\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u4eca\u56de\u306f\u5bfe\u6570\u306e\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3057\u305f\u304c\u3001<span class=\"yellow-hoso\">\u5bfe\u6570\u306b\u306f\u899a\u3048\u3066\u304a\u304d\u305f\u3044\u516c\u5f0f\u304c\u3044\u304f\u3064\u304b\u3042\u308a\u307e\u3059\u3002<\/span><\/p>\n\n\n\n<p>\u5bfe\u6570\u306e\u8a08\u7b97\u516c\u5f0f\u306b\u3064\u3044\u3066\u306f\u3053\u3061\u3089\u306e\u8a18\u4e8b\u3067\u307e\u3068\u3081\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>&gt;&gt;\u5bfe\u6570\u3068\u306f\uff1flog\u306e\u610f\u5473\u3068\u5fc5\u305a\u899a\u3048\u3066\u304a\u304d\u305f\u3044\u516c\u5f0f\u3092\u89e3\u8aac\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>logab \u306e\u5e95\u3092 c \u306b\u5909\u63db\u3057\u3066\u8a08\u7b97\u3057\u307e\u3059\u3002 a, b, c \u3092\u5165\u529b\u5f8c\u3001\u7b97\u51fa\u30dc\u30bf\u30f3\u30af\u30ea\u30c3\u30af\u3057\u3066\u304f\u3060\u3055\u3044\u3002 a: b: c: \u5e95\u306e\u5909\u63db\u516c\u5f0f\uff1alogab = logcblogca \u3088\u308a\u3001 log = loglog = \u3068\u306a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":6596,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"swell_btn_cv_data":"","footnotes":""},"categories":[19,224],"tags":[59,14,11],"class_list":["post-6587","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-log","category-math-2","tag-59","tag-b","tag-11"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306e\u899a\u3048\u65b9\u3068\u4f7f\u3044\u65b9\uff1alog\u306e\u5e95\u3092\u4f55\u306b\u63c3\u3048\u308b\u3079\u304d\u304b\u5224\u65ad\u57fa\u6e96\u3092\u89e3\u8aac<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/math-travel.jp\/math-2\/taisuu-henkan\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306e\u899a\u3048\u65b9\u3068\u4f7f\u3044\u65b9\uff1alog\u306e\u5e95\u3092\u4f55\u306b\u63c3\u3048\u308b\u3079\u304d\u304b\u5224\u65ad\u57fa\u6e96\u3092\u89e3\u8aac\" \/>\n<meta property=\"og:description\" content=\"logab \u306e\u5e95\u3092 c \u306b\u5909\u63db\u3057\u3066\u8a08\u7b97\u3057\u307e\u3059\u3002 a, b, c \u3092\u5165\u529b\u5f8c\u3001\u7b97\u51fa\u30dc\u30bf\u30f3\u30af\u30ea\u30c3\u30af\u3057\u3066\u304f\u3060\u3055\u3044\u3002 a: b: c: \u5e95\u306e\u5909\u63db\u516c\u5f0f\uff1alogab = logcblogca \u3088\u308a\u3001 log = loglog = \u3068\u306a [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/math-travel.jp\/math-2\/taisuu-henkan\/\" \/>\n<meta property=\"og:site_name\" content=\"\u30de\u30b9\u30c8\u30e9\u9ad8\u6821\u6570\u5b66\u307e\u3068\u3081\u30b5\u30a4\u30c8\" \/>\n<meta property=\"article:published_time\" content=\"2025-12-24T08:21:06+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-02-11T08:23:12+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/math-travel.jp\/wp-content\/uploads\/2021\/07\/\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306b\u3064\u3044\u3066\u89e3\u8aac\uff01\u8a3c\u660e\u3068\u5e95\u3092\u6c7a\u3081\u308b\u30b3\u30c4\u304c\u5206\u304b\u308b\uff01.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"630\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"\u3086\u3046\u3084\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@https:\/\/twitter.com\/mathtora\" \/>\n<meta name=\"twitter:label1\" content=\"\u57f7\u7b46\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u3086\u3046\u3084\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593\" \/>\n\t<meta name=\"twitter:data2\" content=\"14\u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/math-travel.jp\/math-2\/taisuu-henkan\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/math-travel.jp\/math-2\/taisuu-henkan\/\"},\"author\":{\"name\":\"\u3086\u3046\u3084\",\"@id\":\"https:\/\/math-travel.jp\/#\/schema\/person\/b0d9d1e7e332261165c2f7318aa4d395\"},\"headline\":\"\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306e\u899a\u3048\u65b9\u3068\u4f7f\u3044\u65b9\uff1alog\u306e\u5e95\u3092\u4f55\u306b\u63c3\u3048\u308b\u3079\u304d\u304b\u5224\u65ad\u57fa\u6e96\u3092\u89e3\u8aac\",\"datePublished\":\"2025-12-24T08:21:06+00:00\",\"dateModified\":\"2026-02-11T08:23:12+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/math-travel.jp\/math-2\/taisuu-henkan\/\"},\"wordCount\":386,\"commentCount\":0,\"image\":{\"@id\":\"https:\/\/math-travel.jp\/math-2\/taisuu-henkan\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/math-travel.jp\/wp-content\/uploads\/2021\/07\/\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306b\u3064\u3044\u3066\u89e3\u8aac\uff01\u8a3c\u660e\u3068\u5e95\u3092\u6c7a\u3081\u308b\u30b3\u30c4\u304c\u5206\u304b\u308b\uff01.png\",\"keywords\":[\"\u5bfe\u6570\",\"\u6570\u5b66\u2161B\",\"\u9ad8\u6821\u6570\u5b66\"],\"articleSection\":[\"\u6307\u6570\u30fb\u5bfe\u6570\",\"\u6570\u5b662\"],\"inLanguage\":\"ja\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/math-travel.jp\/math-2\/taisuu-henkan\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/math-travel.jp\/math-2\/taisuu-henkan\/\",\"url\":\"https:\/\/math-travel.jp\/math-2\/taisuu-henkan\/\",\"name\":\"\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306e\u899a\u3048\u65b9\u3068\u4f7f\u3044\u65b9\uff1alog\u306e\u5e95\u3092\u4f55\u306b\u63c3\u3048\u308b\u3079\u304d\u304b\u5224\u65ad\u57fa\u6e96\u3092\u89e3\u8aac\",\"isPartOf\":{\"@id\":\"https:\/\/math-travel.jp\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/math-travel.jp\/math-2\/taisuu-henkan\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/math-travel.jp\/math-2\/taisuu-henkan\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/math-travel.jp\/wp-content\/uploads\/2021\/07\/\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306b\u3064\u3044\u3066\u89e3\u8aac\uff01\u8a3c\u660e\u3068\u5e95\u3092\u6c7a\u3081\u308b\u30b3\u30c4\u304c\u5206\u304b\u308b\uff01.png\",\"datePublished\":\"2025-12-24T08:21:06+00:00\",\"dateModified\":\"2026-02-11T08:23:12+00:00\",\"author\":{\"@id\":\"https:\/\/math-travel.jp\/#\/schema\/person\/b0d9d1e7e332261165c2f7318aa4d395\"},\"breadcrumb\":{\"@id\":\"https:\/\/math-travel.jp\/math-2\/taisuu-henkan\/#breadcrumb\"},\"inLanguage\":\"ja\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/math-travel.jp\/math-2\/taisuu-henkan\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"ja\",\"@id\":\"https:\/\/math-travel.jp\/math-2\/taisuu-henkan\/#primaryimage\",\"url\":\"https:\/\/math-travel.jp\/wp-content\/uploads\/2021\/07\/\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306b\u3064\u3044\u3066\u89e3\u8aac\uff01\u8a3c\u660e\u3068\u5e95\u3092\u6c7a\u3081\u308b\u30b3\u30c4\u304c\u5206\u304b\u308b\uff01.png\",\"contentUrl\":\"https:\/\/math-travel.jp\/wp-content\/uploads\/2021\/07\/\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306b\u3064\u3044\u3066\u89e3\u8aac\uff01\u8a3c\u660e\u3068\u5e95\u3092\u6c7a\u3081\u308b\u30b3\u30c4\u304c\u5206\u304b\u308b\uff01.png\",\"width\":1200,\"height\":630,\"caption\":\"\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306b\u3064\u3044\u3066\u89e3\u8aac\uff01\u8a3c\u660e\u3068\u5e95\u3092\u6c7a\u3081\u308b\u30b3\u30c4\u304c\u5206\u304b\u308b\uff01\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/math-travel.jp\/math-2\/taisuu-henkan\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u30de\u30b9\u30c8\u30e9TOP\u30da\u30fc\u30b8\",\"item\":\"https:\/\/math-travel.jp\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"\u6570\u5b662\",\"item\":\"https:\/\/math-travel.jp\/math-2\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306e\u899a\u3048\u65b9\u3068\u4f7f\u3044\u65b9\uff1alog\u306e\u5e95\u3092\u4f55\u306b\u63c3\u3048\u308b\u3079\u304d\u304b\u5224\u65ad\u57fa\u6e96\u3092\u89e3\u8aac\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/math-travel.jp\/#website\",\"url\":\"https:\/\/math-travel.jp\/\",\"name\":\"\u30de\u30b9\u30c8\u30e9\u9ad8\u6821\u6570\u5b66\u307e\u3068\u3081\u30b5\u30a4\u30c8\",\"description\":\"\u9ad8\u6821\u6570\u5b66\u307e\u3068\u3081\u30b5\u30a4\u30c8\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/math-travel.jp\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"ja\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/math-travel.jp\/#\/schema\/person\/b0d9d1e7e332261165c2f7318aa4d395\",\"name\":\"\u3086\u3046\u3084\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"ja\",\"@id\":\"https:\/\/math-travel.jp\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/4d305e300a68567ef8b0fcf2b1b0f737d3d5554876534b905de84ae49b754859?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/4d305e300a68567ef8b0fcf2b1b0f737d3d5554876534b905de84ae49b754859?s=96&d=mm&r=g\",\"caption\":\"\u3086\u3046\u3084\"},\"description\":\"\u6570\u5b66\u6559\u80b2\u5c02\u9580\u5bb6\u30fb\u30aa\u30f3\u30e9\u30a4\u30f3\u5bb6\u5ead\u6559\u5e2b\u300c\u30b9\u30bf\u30c7\u30a3\u30c8\u30ec\u30fc\u30ca\u30fc\u300d\u4ee3\u8868 \u611b\u77e5\u6559\u80b2\u5927\u5b66\u6559\u80b2\u5b66\u90e8\u6570\u5b66\u9078\u4fee\u3092\u5352\u696d\u3002\u5c0f\u5b66\u6821\u30fb\u4e2d\u5b66\u6821\u30fb\u9ad8\u7b49\u5b66\u6821\u306e\u6559\u54e1\u514d\u8a31\u3092\u4fdd\u6301\u3057\u3001\u5b9f\u7528\u6570\u5b66\u6280\u80fd\u691c\u5b9a\u6e961\u7d1a\u3092\u6240\u6301\u3002 \u500b\u5225\u6307\u5c0e\u6b7410\u5e74\u3001\u3053\u308c\u307e\u3067\u306b\u6570\u767e\u540d\u4ee5\u4e0a\u306e\u53d7\u9a13\u751f\u3092\u76f4\u63a5\u6307\u5c0e\u3057\u3066\u304d\u307e\u3057\u305f\u3002\u6559\u79d1\u66f8\u306e\u300c\u884c\u9593\u300d\u306b\u3042\u308b\u8ad6\u7406\u3092\u8a00\u8a9e\u5316\u3057\u3001\u6697\u8a18\u306b\u983c\u3089\u306a\u3044\u300c\u672c\u8cea\u7684\u306a\u6570\u5b66\u306e\u697d\u3057\u3055\u300d\u3092\u4f1d\u3048\u308b\u3053\u3068\u3092\u4fe1\u6761\u3068\u3057\u3066\u3044\u307e\u3059\u3002\u73fe\u5728\u306f\u3001\u5168\u56fd\u306e\u751f\u5f92\u3092\u5bfe\u8c61\u3068\u3057\u305f\u30aa\u30f3\u30e9\u30a4\u30f3\u5bb6\u5ead\u6559\u5e2b\u300c\u30b9\u30bf\u30c7\u30a3\u30c8\u30ec\u30fc\u30ca\u30fc\u300d\u3092\u904b\u55b6\u3057\u3001\u504f\u5dee\u502440\u53f0\u304b\u3089\u306e\u9006\u8ee2\u5408\u683c\u3084\u3001\u6570\u5b66\u30a2\u30ec\u30eb\u30ae\u30fc\u306e\u514b\u670d\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002\",\"sameAs\":[\"https:\/\/www.instagram.com\/mathtora\/\",\"https:\/\/x.com\/https:\/\/twitter.com\/mathtora\",\"https:\/\/www.youtube.com\/channel\/UCH36B2btgm4soZodctY1SJQ\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306e\u899a\u3048\u65b9\u3068\u4f7f\u3044\u65b9\uff1alog\u306e\u5e95\u3092\u4f55\u306b\u63c3\u3048\u308b\u3079\u304d\u304b\u5224\u65ad\u57fa\u6e96\u3092\u89e3\u8aac","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/math-travel.jp\/math-2\/taisuu-henkan\/","og_locale":"ja_JP","og_type":"article","og_title":"\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306e\u899a\u3048\u65b9\u3068\u4f7f\u3044\u65b9\uff1alog\u306e\u5e95\u3092\u4f55\u306b\u63c3\u3048\u308b\u3079\u304d\u304b\u5224\u65ad\u57fa\u6e96\u3092\u89e3\u8aac","og_description":"logab \u306e\u5e95\u3092 c \u306b\u5909\u63db\u3057\u3066\u8a08\u7b97\u3057\u307e\u3059\u3002 a, b, c \u3092\u5165\u529b\u5f8c\u3001\u7b97\u51fa\u30dc\u30bf\u30f3\u30af\u30ea\u30c3\u30af\u3057\u3066\u304f\u3060\u3055\u3044\u3002 a: b: c: \u5e95\u306e\u5909\u63db\u516c\u5f0f\uff1alogab = logcblogca \u3088\u308a\u3001 log = loglog = \u3068\u306a [&hellip;]","og_url":"https:\/\/math-travel.jp\/math-2\/taisuu-henkan\/","og_site_name":"\u30de\u30b9\u30c8\u30e9\u9ad8\u6821\u6570\u5b66\u307e\u3068\u3081\u30b5\u30a4\u30c8","article_published_time":"2025-12-24T08:21:06+00:00","article_modified_time":"2026-02-11T08:23:12+00:00","og_image":[{"width":1200,"height":630,"url":"https:\/\/math-travel.jp\/wp-content\/uploads\/2021\/07\/\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306b\u3064\u3044\u3066\u89e3\u8aac\uff01\u8a3c\u660e\u3068\u5e95\u3092\u6c7a\u3081\u308b\u30b3\u30c4\u304c\u5206\u304b\u308b\uff01.png","type":"image\/png"}],"author":"\u3086\u3046\u3084","twitter_card":"summary_large_image","twitter_creator":"@https:\/\/twitter.com\/mathtora","twitter_misc":{"\u57f7\u7b46\u8005":"\u3086\u3046\u3084","\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593":"14\u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/math-travel.jp\/math-2\/taisuu-henkan\/#article","isPartOf":{"@id":"https:\/\/math-travel.jp\/math-2\/taisuu-henkan\/"},"author":{"name":"\u3086\u3046\u3084","@id":"https:\/\/math-travel.jp\/#\/schema\/person\/b0d9d1e7e332261165c2f7318aa4d395"},"headline":"\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306e\u899a\u3048\u65b9\u3068\u4f7f\u3044\u65b9\uff1alog\u306e\u5e95\u3092\u4f55\u306b\u63c3\u3048\u308b\u3079\u304d\u304b\u5224\u65ad\u57fa\u6e96\u3092\u89e3\u8aac","datePublished":"2025-12-24T08:21:06+00:00","dateModified":"2026-02-11T08:23:12+00:00","mainEntityOfPage":{"@id":"https:\/\/math-travel.jp\/math-2\/taisuu-henkan\/"},"wordCount":386,"commentCount":0,"image":{"@id":"https:\/\/math-travel.jp\/math-2\/taisuu-henkan\/#primaryimage"},"thumbnailUrl":"https:\/\/math-travel.jp\/wp-content\/uploads\/2021\/07\/\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306b\u3064\u3044\u3066\u89e3\u8aac\uff01\u8a3c\u660e\u3068\u5e95\u3092\u6c7a\u3081\u308b\u30b3\u30c4\u304c\u5206\u304b\u308b\uff01.png","keywords":["\u5bfe\u6570","\u6570\u5b66\u2161B","\u9ad8\u6821\u6570\u5b66"],"articleSection":["\u6307\u6570\u30fb\u5bfe\u6570","\u6570\u5b662"],"inLanguage":"ja","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/math-travel.jp\/math-2\/taisuu-henkan\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/math-travel.jp\/math-2\/taisuu-henkan\/","url":"https:\/\/math-travel.jp\/math-2\/taisuu-henkan\/","name":"\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306e\u899a\u3048\u65b9\u3068\u4f7f\u3044\u65b9\uff1alog\u306e\u5e95\u3092\u4f55\u306b\u63c3\u3048\u308b\u3079\u304d\u304b\u5224\u65ad\u57fa\u6e96\u3092\u89e3\u8aac","isPartOf":{"@id":"https:\/\/math-travel.jp\/#website"},"primaryImageOfPage":{"@id":"https:\/\/math-travel.jp\/math-2\/taisuu-henkan\/#primaryimage"},"image":{"@id":"https:\/\/math-travel.jp\/math-2\/taisuu-henkan\/#primaryimage"},"thumbnailUrl":"https:\/\/math-travel.jp\/wp-content\/uploads\/2021\/07\/\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306b\u3064\u3044\u3066\u89e3\u8aac\uff01\u8a3c\u660e\u3068\u5e95\u3092\u6c7a\u3081\u308b\u30b3\u30c4\u304c\u5206\u304b\u308b\uff01.png","datePublished":"2025-12-24T08:21:06+00:00","dateModified":"2026-02-11T08:23:12+00:00","author":{"@id":"https:\/\/math-travel.jp\/#\/schema\/person\/b0d9d1e7e332261165c2f7318aa4d395"},"breadcrumb":{"@id":"https:\/\/math-travel.jp\/math-2\/taisuu-henkan\/#breadcrumb"},"inLanguage":"ja","potentialAction":[{"@type":"ReadAction","target":["https:\/\/math-travel.jp\/math-2\/taisuu-henkan\/"]}]},{"@type":"ImageObject","inLanguage":"ja","@id":"https:\/\/math-travel.jp\/math-2\/taisuu-henkan\/#primaryimage","url":"https:\/\/math-travel.jp\/wp-content\/uploads\/2021\/07\/\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306b\u3064\u3044\u3066\u89e3\u8aac\uff01\u8a3c\u660e\u3068\u5e95\u3092\u6c7a\u3081\u308b\u30b3\u30c4\u304c\u5206\u304b\u308b\uff01.png","contentUrl":"https:\/\/math-travel.jp\/wp-content\/uploads\/2021\/07\/\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306b\u3064\u3044\u3066\u89e3\u8aac\uff01\u8a3c\u660e\u3068\u5e95\u3092\u6c7a\u3081\u308b\u30b3\u30c4\u304c\u5206\u304b\u308b\uff01.png","width":1200,"height":630,"caption":"\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306b\u3064\u3044\u3066\u89e3\u8aac\uff01\u8a3c\u660e\u3068\u5e95\u3092\u6c7a\u3081\u308b\u30b3\u30c4\u304c\u5206\u304b\u308b\uff01"},{"@type":"BreadcrumbList","@id":"https:\/\/math-travel.jp\/math-2\/taisuu-henkan\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u30de\u30b9\u30c8\u30e9TOP\u30da\u30fc\u30b8","item":"https:\/\/math-travel.jp\/"},{"@type":"ListItem","position":2,"name":"\u6570\u5b662","item":"https:\/\/math-travel.jp\/math-2\/"},{"@type":"ListItem","position":3,"name":"\u5e95\u306e\u5909\u63db\u516c\u5f0f\u306e\u899a\u3048\u65b9\u3068\u4f7f\u3044\u65b9\uff1alog\u306e\u5e95\u3092\u4f55\u306b\u63c3\u3048\u308b\u3079\u304d\u304b\u5224\u65ad\u57fa\u6e96\u3092\u89e3\u8aac"}]},{"@type":"WebSite","@id":"https:\/\/math-travel.jp\/#website","url":"https:\/\/math-travel.jp\/","name":"\u30de\u30b9\u30c8\u30e9\u9ad8\u6821\u6570\u5b66\u307e\u3068\u3081\u30b5\u30a4\u30c8","description":"\u9ad8\u6821\u6570\u5b66\u307e\u3068\u3081\u30b5\u30a4\u30c8","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/math-travel.jp\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"ja"},{"@type":"Person","@id":"https:\/\/math-travel.jp\/#\/schema\/person\/b0d9d1e7e332261165c2f7318aa4d395","name":"\u3086\u3046\u3084","image":{"@type":"ImageObject","inLanguage":"ja","@id":"https:\/\/math-travel.jp\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/4d305e300a68567ef8b0fcf2b1b0f737d3d5554876534b905de84ae49b754859?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/4d305e300a68567ef8b0fcf2b1b0f737d3d5554876534b905de84ae49b754859?s=96&d=mm&r=g","caption":"\u3086\u3046\u3084"},"description":"\u6570\u5b66\u6559\u80b2\u5c02\u9580\u5bb6\u30fb\u30aa\u30f3\u30e9\u30a4\u30f3\u5bb6\u5ead\u6559\u5e2b\u300c\u30b9\u30bf\u30c7\u30a3\u30c8\u30ec\u30fc\u30ca\u30fc\u300d\u4ee3\u8868 \u611b\u77e5\u6559\u80b2\u5927\u5b66\u6559\u80b2\u5b66\u90e8\u6570\u5b66\u9078\u4fee\u3092\u5352\u696d\u3002\u5c0f\u5b66\u6821\u30fb\u4e2d\u5b66\u6821\u30fb\u9ad8\u7b49\u5b66\u6821\u306e\u6559\u54e1\u514d\u8a31\u3092\u4fdd\u6301\u3057\u3001\u5b9f\u7528\u6570\u5b66\u6280\u80fd\u691c\u5b9a\u6e961\u7d1a\u3092\u6240\u6301\u3002 \u500b\u5225\u6307\u5c0e\u6b7410\u5e74\u3001\u3053\u308c\u307e\u3067\u306b\u6570\u767e\u540d\u4ee5\u4e0a\u306e\u53d7\u9a13\u751f\u3092\u76f4\u63a5\u6307\u5c0e\u3057\u3066\u304d\u307e\u3057\u305f\u3002\u6559\u79d1\u66f8\u306e\u300c\u884c\u9593\u300d\u306b\u3042\u308b\u8ad6\u7406\u3092\u8a00\u8a9e\u5316\u3057\u3001\u6697\u8a18\u306b\u983c\u3089\u306a\u3044\u300c\u672c\u8cea\u7684\u306a\u6570\u5b66\u306e\u697d\u3057\u3055\u300d\u3092\u4f1d\u3048\u308b\u3053\u3068\u3092\u4fe1\u6761\u3068\u3057\u3066\u3044\u307e\u3059\u3002\u73fe\u5728\u306f\u3001\u5168\u56fd\u306e\u751f\u5f92\u3092\u5bfe\u8c61\u3068\u3057\u305f\u30aa\u30f3\u30e9\u30a4\u30f3\u5bb6\u5ead\u6559\u5e2b\u300c\u30b9\u30bf\u30c7\u30a3\u30c8\u30ec\u30fc\u30ca\u30fc\u300d\u3092\u904b\u55b6\u3057\u3001\u504f\u5dee\u502440\u53f0\u304b\u3089\u306e\u9006\u8ee2\u5408\u683c\u3084\u3001\u6570\u5b66\u30a2\u30ec\u30eb\u30ae\u30fc\u306e\u514b\u670d\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002","sameAs":["https:\/\/www.instagram.com\/mathtora\/","https:\/\/x.com\/https:\/\/twitter.com\/mathtora","https:\/\/www.youtube.com\/channel\/UCH36B2btgm4soZodctY1SJQ"]}]}},"_links":{"self":[{"href":"https:\/\/math-travel.jp\/wp-json\/wp\/v2\/posts\/6587","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/math-travel.jp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/math-travel.jp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/math-travel.jp\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/math-travel.jp\/wp-json\/wp\/v2\/comments?post=6587"}],"version-history":[{"count":26,"href":"https:\/\/math-travel.jp\/wp-json\/wp\/v2\/posts\/6587\/revisions"}],"predecessor-version":[{"id":21521,"href":"https:\/\/math-travel.jp\/wp-json\/wp\/v2\/posts\/6587\/revisions\/21521"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/math-travel.jp\/wp-json\/wp\/v2\/media\/6596"}],"wp:attachment":[{"href":"https:\/\/math-travel.jp\/wp-json\/wp\/v2\/media?parent=6587"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/math-travel.jp\/wp-json\/wp\/v2\/categories?post=6587"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/math-travel.jp\/wp-json\/wp\/v2\/tags?post=6587"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}