{"id":1188,"date":"2025-07-05T23:03:01","date_gmt":"2025-07-05T14:03:01","guid":{"rendered":"https:\/\/fukugrow.jp\/?p=1188"},"modified":"2025-07-05T23:07:46","modified_gmt":"2025-07-05T14:07:46","slug":"%e8%b3%87%e7%94%a3%e3%81%8c3%e5%80%8d%e3%81%ab%e3%81%aa%e3%82%8b%e3%81%be%e3%81%a7%e3%81%a3%e3%81%a6%e3%80%81%e3%81%a9%e3%82%8c%e3%81%8f%e3%82%89%e3%81%84%ef%bc%9f%ef%bd%9c%e3%80%8c115%e3%81%ae","status":"publish","type":"post","link":"https:\/\/fukugrow.jp\/?p=1188","title":{"rendered":"\u8cc7\u7523\u304c3\u500d\u306b\u306a\u308b\u307e\u3067\u3063\u3066\u3001\u3069\u308c\u304f\u3089\u3044\uff1f\uff5c\u300c115\u306e\u6cd5\u5247\u300d\u3063\u3066\u5b9f\u969b\u3069\u3046\u5c0e\u304b\u308c\u308b\u306e\uff1f"},"content":{"rendered":"\n

\u8cc7\u7523\u304c2\u500d\u306b\u306a\u308b\u307e\u3067\u306e\u6642\u9593\u3092\u3056\u3063\u304f\u308a\u51fa\u3059\u305f\u3081\u306e\u6cd5\u5247\u3067\u300172 \u00f7 \u91d1\u5229\uff08%\uff09 \u2252 \u5e74\u6570<\/strong> \u3068\u3044\u3046\u4fbf\u5229\u306a\u8fd1\u4f3c\u5f0f\u3067\u3059\u306d\u3002\u305f\u3068\u3048\u3070\u5e74\u52296%\u306a\u3089\u300172 \u00f7 6 = 12\u5e74\u3002\u30b7\u30f3\u30d7\u30eb\u3067\u899a\u3048\u3084\u3059\u3044\u3002<\/p>\n\n\n\n

\u3067\u3082\u2026\u3075\u3068\u601d\u3063\u305f\u3093\u3067\u3059\u3002<\/p>\n\n\n\n

<\/div>\u8003\u3048\u308b\u4eba<\/span>
\n

\u300c\u3058\u3083\u3042\u30013\u500d\u306b\u306a\u308b\u307e\u3067\u306e\u6642\u9593<\/strong>\u3063\u3066\u3001\u3069\u3046\u3084\u3063\u3066\u51fa\u3059\u306e\uff1f\u300d<\/p>\n<\/div><\/div><\/div>\n\n\n\n

<\/p>\n\n\n\n

\u305d\u3093\u306a\u7d20\u6734\u306a\u7591\u554f\u304b\u3089\u59cb\u307e\u3063\u305f\u306e\u304c\u3001\u4eca\u56de\u306e\u30c6\u30fc\u30de\u3067\u3059\u3002<\/p>\n\n\n\n

2\u500d\u3058\u3083\u306a\u304f\u30663\u500d\u3002<\/p>\n\n\n\n

\u3053\u308c\u3001\u610f\u5916\u3068\u77e5\u3089\u308c\u3066\u306a\u3044\u3051\u3069\u3001\u5b9f\u306f\u300c115\u306e\u6cd5\u5247<\/strong>\u300d\u304c\u3042\u308b\u3093\u3067\u3059\u3002<\/p>\n\n\n\n

\u4eca\u56de\u306f\u3053\u306e\u201c\u8cc7\u75233\u500d\u306e\u6cd5\u5247\u201d\u3092\u3001\u3061\u3083\u3093\u3068\u5f0f\u304b\u3089\u5c0e\u3044\u3066\u307f\u3088\u3046\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n[lwptoc]\n\n\n

\u8cc7\u7523\u304c3\u500d\u306b\u306a\u308b\u307e\u3067\u306e\u8a08\u7b97\u5f0f\u3063\u3066\uff1f<\/strong><\/h2>\n\n\n\n

\u307e\u305a\u306f\u3001\u8a08\u7b97\u306e\u571f\u53f0\u3068\u306a\u308b\u300c\u8907\u5229\u306e\u516c\u5f0f\u300d\u304b\u3089\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n

\u8cc7\u7523\u304c\u5e74\u5229 r\uff08\u5c0f\u6570\uff09\u3067\u904b\u7528\u3055\u308c\u3066\u3001n \u5e74\u30673\u500d\u306b\u306a\u308b\u3068\u3057\u307e\u3057\u3087\u3046\u3002\u3059\u308b\u3068\u3001\u3053\u3093\u306a\u5f0f\u304c\u7acb\u3061\u307e\u3059<\/p>\n\n\n

\"(1 + r)^n = 3\"<\/p>\n\n\n\n

\u3053\u306e\u5f0f\u3001\u8907\u5229\u3067\u306f\u57fa\u672c\u4e2d\u306e\u57fa\u672c\u3067\u3059\u3002<\/p>\n\n\n\n

\u81ea\u7136\u5bfe\u6570\u3092\u4f7f\u3063\u3066\u5f0f\u3092\u5909\u5f62\u3057\u3066\u3044\u304f<\/strong><\/h2>\n\n\n\n

\u3053\u306e\u6307\u6570\u90e8\u5206\u3092\u89e3\u304f\u305f\u3081\u306b\u3001\u4e21\u8fba\u306b\u81ea\u7136\u5bfe\u6570\uff08ln\uff09\u3092\u53d6\u308a\u307e\u3059<\/strong>\u3002<\/p>\n\n\n

\"\ln((1 + r)^n) = \ln(3)<\/p>\n\n\n\n

\u5bfe\u6570\u306e\u6027\u8cea\u3092\u4f7f\u3063\u3066\u5909\u5f62\u3059\u308b\u3068\uff1a<\/p>\n\n\n

\"n = \frac{\ln(3)}{\ln(1 + r)}\"<\/p>\n\n\n\n

\u3053\u3053\u307e\u3067\u306f\u3001\u9ad8\u6821\u6570\u5b66\u306e\u7bc4\u56f2\u3067\u3059\u306d\u3002<\/p>\n\n\n\n

ln(1+r)\u306e\u51e6\u7406\u65b9\u6cd5\uff5c\u5c0f\u3055\u3044r\u306a\u3089\u8fd1\u4f3c\u3067\u304d\u308b<\/strong><\/h2>\n\n\n\n

\u3053\u3053\u3067\u554f\u984c\u306b\u306a\u308b\u306e\u304c\u5206\u6bcd\u306e\u300cln(1 + r)\u300d\u3067\u3059\u3002<\/p>\n\n\n\n

\u3053\u308c\u306f\u5e74\u5229r\u304c\u5c0f\u3055\u3044\u5834\u5408\uff081\u301c10%\u304f\u3089\u3044\uff09\u306b\u306f\u3001\u3053\u3093\u306a\u3075\u3046\u306b\u8fd1\u4f3c\u3067\u304d\u307e\u3059\uff1a<\/p>\n\n\n

\"\ln(1 + r)=r\"<\/p>\n\n\n\n

\u3053\u306e\u8fd1\u4f3c\u306f\u3001\u30c6\u30a4\u30e9\u30fc\u5c55\u958b<\/strong>\u3068\u3044\u3046\u6570\u5b66\u7684\u624b\u6cd5\u304b\u3089\u6765\u3066\u3044\u307e\u3059\uff1a<\/p>\n\n\n

\"\ln(1 + r) = r - \frac{r^2}{2} + \frac{r^3}{3} - \cdots<\/p>\n\n\n\n

r\u304c\u5341\u5206\u5c0f\u3055\u3051\u308c\u3070\u30012\u9805\u76ee\u4ee5\u964d\u306f\u307b\u3068\u3093\u3069\u7121\u8996\u3067\u304d\u308b\u306e\u3067<\/p>\n\n\n

\"\ln(1 + r) = r\"<\/p>\n\n\n\n

\u3068\u3044\u3046\u3053\u3068\u306f\u2026n \u2252 ln(3) \u00f7 r\uff01<\/strong><\/h2>\n\n\n\n

\u3053\u306e\u8fd1\u4f3c\u3092<\/p>\n\n\n

\"n = \frac{\ln(3)}{\ln(1 + r)}\"<\/p>\n\n\n\n

\u306b\u4ee3\u5165\u3059\u308b\u3068<\/p>\n\n\n

\"n = \frac{\ln(3)}{r}\"<\/p>\n\n\n\n

\u3053\u3053\u3067\u3001ln(3) \u2252 1.0986<\/strong> \u3068\u3044\u3046\u5b9a\u6570\u3092\u4f7f\u3048\u3070\u2026<\/p>\n\n\n

\"n = \frac{1.0986}{r}\"<\/p>\n\n\n\n

\u3053\u308c\u304c\u3001\u8cc7\u7523\u304c3\u500d\u306b\u306a\u308b\u307e\u3067\u306e\u5e74\u6570<\/strong>\u3092\u6c42\u3081\u308b\u8fd1\u4f3c\u5f0f<\/strong>\u306b\u306a\u308a\u307e\u3059\uff01<\/p>\n\n\n\n

\u5e74\u5229\u5225\u306b\u8a08\u7b97\u3057\u3066\u307f\u3088\u3046<\/strong><\/h2>\n\n\n\n

\u305f\u3068\u3048\u3070\u3053\u3093\u306a\u611f\u3058\u3067\u4f7f\u3048\u307e\u3059\uff1a<\/p>\n\n\n\n

\u5e74\u5229\uff08%\uff09<\/strong><\/th>r\uff08\u5c0f\u6570\uff09<\/strong><\/th>\u5e74\u6570\uff08n \u2252 1.0986 \/ r\uff09<\/strong><\/th><\/tr><\/thead>
1%<\/td>0.01<\/td>\u7d04109.9\u5e74<\/td><\/tr>
3%<\/td>0.03<\/td>\u7d0436.6\u5e74<\/td><\/tr>
5%<\/td>0.05<\/td>\u7d0422.0\u5e74<\/td><\/tr>
10%<\/td>0.10<\/td>\u7d0411.0\u5e74<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u3051\u3063\u3053\u3046\u30ea\u30a2\u30eb\u306a\u6570\u5b57\u304c\u51fa\u307e\u3059\u3088\u306d\u3002\u300c72\u306e\u6cd5\u5247\u300d\u3088\u308a\u3082\u5c11\u3057\u9577\u304f\u306a\u308b\u611f\u3058\u304c\u3001\u4f53\u611f\u306b\u3082\u5408\u3044\u307e\u3059\u3002<\/p>\n\n\n\n

\u300c115\u306e\u6cd5\u5247\u300d\u306f\u3053\u3053\u304b\u3089\u6765\u3066\u3044\u308b\uff01<\/strong><\/h2>\n\n\n\n

\u3061\u306a\u307f\u306b\u3001\u6295\u8cc7\u306e\u4e16\u754c\u306b\u306f\u300c115\u306e\u6cd5\u5247\u300d\u3068\u3044\u3046\u8868\u73fe\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n

\u3053\u308c\u306f\u3001<\/p>\n\n\n

\"n = \frac{1.0986}{r} = \frac{115}{100r}\"<\/p>\n\n\n\n

\u3068\u3044\u3046\u8fd1\u4f3c\u304b\u3089\u6765\u3066\u308b\u3093\u3067\u3059\u3002<\/p>\n\n\n\n

\u3064\u307e\u308a\u3001<\/p>\n\n\n\n