{"id":19114,"date":"2023-09-06T04:55:41","date_gmt":"2023-09-06T04:55:41","guid":{"rendered":"https:\/\/club.informatix.co.jp\/?p=19114"},"modified":"2025-09-08T13:24:13","modified_gmt":"2025-09-08T04:24:13","slug":"%e3%83%9e%e3%82%a4%e3%83%8a%e3%82%b9%e3%81%8b%e3%81%91%e3%82%8b%e3%83%9e%e3%82%a4%e3%83%8a%e3%82%b9%e3%81%af%e3%81%aa%e3%81%9c%e3%83%97%e3%83%a9%e3%82%b9%e3%81%ab%e3%81%aa%e3%82%8b%e3%81%ae%e3%81%8b","status":"publish","type":"post","link":"https:\/\/club.informatix.co.jp\/?p=19114","title":{"rendered":"\u30de\u30a4\u30ca\u30b9\u304b\u3051\u308b\u30de\u30a4\u30ca\u30b9\u306f\u306a\u305c\u30d7\u30e9\u30b9\u306b\u306a\u308b\u306e\u304b\uff1f 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ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/club.informatix.co.jp\/?p=19114\/#%E6%AD%A3%E8%B2%A0%E3%81%AE%E3%81%8B%E3%81%91%E7%AE%97\" >\u6b63\u8ca0\u306e\u304b\u3051\u7b97<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/club.informatix.co.jp\/?p=19114\/#%E3%83%9E%E3%82%A4%E3%83%8A%E3%82%B9%C3%97%E3%83%9E%E3%82%A4%E3%83%8A%E3%82%B9%EF%BC%9D%E3%83%97%E3%83%A9%E3%82%B9%E3%81%AE%E8%AB%96%E7%90%86%E7%9A%84%E6%95%B4%E5%90%88%E6%80%A7\" >\u30de\u30a4\u30ca\u30b9\u00d7\u30de\u30a4\u30ca\u30b9\uff1d\u30d7\u30e9\u30b9\u306e\u8ad6\u7406\u7684\u6574\u5408\u6027<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/club.informatix.co.jp\/?p=19114\/#%E3%83%9E%E3%82%A4%E3%83%8A%E3%82%B9%C3%97%E3%83%9E%E3%82%A4%E3%83%8A%E3%82%B9%EF%BC%9D%E3%83%97%E3%83%A9%E3%82%B9%E3%81%AE%E8%AB%96%E7%90%86%E7%9A%84%E6%95%B4%E5%90%88%E6%80%A7_%E2%91%A0\" >\u30de\u30a4\u30ca\u30b9\u00d7\u30de\u30a4\u30ca\u30b9\uff1d\u30d7\u30e9\u30b9\u306e\u8ad6\u7406\u7684\u6574\u5408\u6027 \u2460<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/club.informatix.co.jp\/?p=19114\/#%E3%83%9E%E3%82%A4%E3%83%8A%E3%82%B9%C3%97%E3%83%9E%E3%82%A4%E3%83%8A%E3%82%B9%EF%BC%9D%E3%83%97%E3%83%A9%E3%82%B9%E3%81%AE%E8%AB%96%E7%90%86%E7%9A%84%E6%95%B4%E5%90%88%E6%80%A7_%E2%91%A1\" >\u30de\u30a4\u30ca\u30b9\u00d7\u30de\u30a4\u30ca\u30b9\uff1d\u30d7\u30e9\u30b9\u306e\u8ad6\u7406\u7684\u6574\u5408\u6027 \u2461<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/club.informatix.co.jp\/?p=19114\/#%E3%83%9E%E3%82%A4%E3%83%8A%E3%82%B9%C3%97%E3%83%9E%E3%82%A4%E3%83%8A%E3%82%B9%EF%BC%9D%E3%83%97%E3%83%A9%E3%82%B9%E3%81%AE%E8%AB%96%E7%90%86%E7%9A%84%E6%95%B4%E5%90%88%E6%80%A7%E2%91%A2\" >\u30de\u30a4\u30ca\u30b9\u00d7\u30de\u30a4\u30ca\u30b9\uff1d\u30d7\u30e9\u30b9\u306e\u8ad6\u7406\u7684\u6574\u5408\u6027\u2462<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n\n<h2><span class=\"ez-toc-section\" id=\"%E3%83%97%E3%83%A9%E3%82%B9%E3%81%A8%E3%83%9E%E3%82%A4%E3%83%8A%E3%82%B9%E3%81%AE%E6%95%B0\"><\/span>\u30d7\u30e9\u30b9\u3068\u30de\u30a4\u30ca\u30b9\u306e\u6570<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u307e\u305a\u306f\u6570\u306e\u6b63\u3068\u8ca0\u306b\u3064\u3044\u3066\u305d\u306e\u610f\u5473\u3092\u8003\u3048\u3066\u307f\u307e\u3059\u3002\uff10\u3068\u3044\u3046\u57fa\u6e96\u304c\u3042\u3063\u3066\uff10\u3088\u308a\u3082\u5927\u304d\u3044\u6570\u3092\u6b63\u306e\u6570\u3001\u5c0f\u3055\u3044\u6570\u3092\u8ca0\u306e\u6570\u3068\u6c7a\u3081\u308b\u3053\u3068\u306f\u8ab0\u3082\u304c\u7d0d\u5f97\u3059\u308b\u3068\u3053\u308d\u3067\u3059\u3002<\/p>\n<p>\u6570\u306f\u6b63\u304b\uff10\u304b\u8ca0\u306e\u3069\u308c\u304b\u3067\u3059\u3002\u6570\u76f4\u7dda\u3068\u3044\u3046\u56f3\u5f62\u3092\u7528\u610f\u3057\u3066\u3001\uff10\u306e\u4f4d\u7f6e\u3092\u6c7a\u3081\u308b\u3068\u305d\u306e\u5de6\u5074\u304c\u8ca0\u3001\u53f3\u5074\u304c\u6b63\u3068\u306a\u308a\u307e\u3059\u3002\u6e29\u5ea6\u8a08\u306f\u4e0a\u4e0b\u3067\u305d\u306e\u95a2\u4fc2\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\uff10\u5ea6\u3088\u308a\u4e0a\u306b\u3044\u304f\u307b\u3069\u6e29\u5ea6\u304c\u9ad8\u304f\u3001\u4e0b\u306b\u884c\u304f\u307b\u3069\u4f4e\u304f\u306a\u308b\u3088\u3046\u76ee\u76db\u308a\u304c\u632f\u3063\u3066\u3042\u308a\u307e\u3059\u3002<\/p>\n<p style=\"text-align: center;\"><span class=\"photoline\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-19118\" src=\"https:\/\/club.informatix.co.jp\/wp-content\/uploads\/2023\/09\/26064056_s-1.jpg\" alt=\"\" width=\"640\" height=\"480\" srcset=\"https:\/\/club.informatix.co.jp\/wp-content\/uploads\/2023\/09\/26064056_s-1.jpg 640w, https:\/\/club.informatix.co.jp\/wp-content\/uploads\/2023\/09\/26064056_s-1-300x225.jpg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/span><span style=\"font-size: 70%;\">\u5199\u771f\uff1a\u30cb\u30bb\u30b3\u306e\u30b9\u30ad\u30fc\u5834\u306e\u6e29\u5ea6\u8a08<\/span><\/p>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E6%AD%A3%E8%B2%A0%E3%81%AE%E8%B6%B3%E3%81%97%E7%AE%97%E3%81%A8%E5%BC%95%E3%81%8D%E7%AE%97\"><\/span>\u6b63\u8ca0\u306e\u8db3\u3057\u7b97\u3068\u5f15\u304d\u7b97<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u3055\u3066\u3001\u6b63\u8ca0\u306e\u8db3\u3057\u7b97\u3068\u5f15\u304d\u7b97\u3092\u3053\u306e\u6570\u76f4\u7dda\u3092\u4f7f\u3063\u3066\u8003\u3048\u3066\u307f\u307e\u3059\u3002<\/p>\n<p>\uff17\u2212\uff13\uff1d\uff14\u306f\uff08\uff0b\uff17\uff09\uff0b\uff08\u2212\uff13\uff09\u3068\u8003\u3048\u3066\u3001\u300c\uff10\u304b\u3089\u53f3\u306b\uff17\u3060\u3051\u9032\u307f\u3001\u6b21\u306b\u305d\u3053\u304b\u3089\u5de6\u306b\uff13\u9032\u3080\u3068\uff0b\uff14\u306e\u3068\u3053\u308d\u306b\u884c\u304d\u7740\u304f\u300d\u3068\u8003\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u2212\uff15\uff0b\uff13\u306a\u3089\uff08\u2212\uff15\uff09\uff0b\uff08\uff0b\uff13\uff09\u3068\u8003\u3048\u3066\u3001\u300c\uff10\u304b\u3089\u5de6\u306b\uff15\u3060\u3051\u9032\u307f\u3001\u6b21\u306b\u305d\u3053\u304b\u3089\u53f3\u306b\uff13\u9032\u3080\u3068\u2212\uff12\u306e\u3068\u3053\u308d\u306b\u884c\u304d\u7740\u304f\u300d\u3068\u3044\u3046\u5177\u5408\u3067\u3059\u3002\u3053\u308c\u3089\u306e\u8a08\u7b97\u304b\u3089<span class=\"ymarker-s\">\u6b63\u3068\u8ca0\u3068\u3044\u3046\u306e\u306f\u5411\u304d\u3092\u8868\u3057\u3066\u3044\u308b<\/span>\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<br \/>\n<img decoding=\"async\" class=\"aligncenter size-large wp-image-19120\" src=\"https:\/\/club.informatix.co.jp\/wp-content\/uploads\/2023\/09\/\u685c\u4e95\u6c0f\u633f\u7d75-1-1024x576.png\" alt=\"\" width=\"920\" height=\"518\" srcset=\"https:\/\/club.informatix.co.jp\/wp-content\/uploads\/2023\/09\/\u685c\u4e95\u6c0f\u633f\u7d75-1-1024x576.png 1024w, https:\/\/club.informatix.co.jp\/wp-content\/uploads\/2023\/09\/\u685c\u4e95\u6c0f\u633f\u7d75-1-300x169.png 300w, https:\/\/club.informatix.co.jp\/wp-content\/uploads\/2023\/09\/\u685c\u4e95\u6c0f\u633f\u7d75-1-768x432.png 768w, https:\/\/club.informatix.co.jp\/wp-content\/uploads\/2023\/09\/\u685c\u4e95\u6c0f\u633f\u7d75-1.png 1280w\" sizes=\"(max-width: 920px) 100vw, 920px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E6%AD%A3%E8%B2%A0%E3%81%AE%E3%81%8B%E3%81%91%E7%AE%97\"><\/span>\u6b63\u8ca0\u306e\u304b\u3051\u7b97<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u304b\u3051\u7b97\u306f\u3053\u306e\u5411\u304d\u306b\u3064\u3044\u3066\u8003\u3048\u308b\u306e\u3067\u3059\u3002<\/p>\n<p>\uff08\uff0b\uff13\uff09\u00d7\uff08\uff0b\uff12\uff09\uff1d\uff16<\/p>\n<p>\u3053\u308c\u306f\u3001\uff08\uff0b\uff13\uff09\u00d7\uff12\u00d7\uff08\uff0b\uff11\uff09\u3068\u8003\u3048\u308b\u306e\u3067\u3059\u3002\u306f\u3058\u3081\u306e\uff08\uff0b\uff13\uff09\u00d7\uff12\u306f\uff08\uff0b\uff13\uff09\uff0b\uff08\uff0b\uff13\uff09\u306e\u3053\u3068\u3067\u3059\u304b\u3089\uff08\uff0b\uff16\uff09\u306b\u306a\u308a\u307e\u3059\u3002\u305d\u308c\u306b\uff08\uff0b\uff11\uff09\u3092\u639b\u3051\u308b\u3068\u306f\u305d\u306e\uff0b\uff16\u306e\u5411\u304d\u3092\u540c\u3058\u5411\u304d\u306b\u3059\u308b\u3053\u3068\u3001\u3064\u307e\u308a\u305d\u306e\u307e\u307e\u306e\uff0b\uff16\u304c\u7b54\u3048\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\uff08\uff0b\uff13\uff09\u00d7\uff08\u2212\uff12\uff09\u306f\uff08\uff0b\uff13\uff09\u00d7\uff12\u00d7\uff08\u2212\uff11\uff09\u3068\u8003\u3048\u308b\u306e\u3067\u3059\u3002\u307e\u305a\u3001\uff08\uff0b\uff13\uff09\u00d7\uff12\uff1d\uff0b\uff16\u305d\u308c\u306b\uff08\u2212\uff11\uff09\u3092\u639b\u3051\u308b\u3068\u306f\u305d\u306e\uff08\uff0b\uff16\uff09\u306e\u5411\u304d\u3092\u53cd\u5bfe\u5411\u304d\u306b\u3059\u308b\u3053\u3068\u3001\u3064\u307e\u308a\u2212\uff16\u304c\u7b54\u3048\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u300c<span class=\"ymarker-s\">\uff08\u2212\uff11\uff09\u3092\u639b\u3051\u308b\u3068\u5411\u304d\u304c\u53cd\u5bfe\u5411\u304d\u306b\u306a\u308b<\/span>\u300d\u3068\u8003\u3048\u308b\u306e\u3067\u3059\u3002<\/p>\n<p>\u3053\u306e\u8003\u3048\u65b9\u3092\u3001\uff08\u2212\uff13\uff09\u00d7\uff08\u2212\uff12\uff09\u306b\u9069\u7528\u3057\u3066\u307f\u307e\u3059\u3002\uff08\u2212\uff13\uff09\u00d7\uff12\u00d7\uff08\u2212\uff11\uff09\uff1d\uff08\u2212\uff16\uff09\u3053\u308c\u306b\u2212\uff11\u3092\u639b\u3051\u308b\u3068\u305d\u306e\u5411\u304d\u3092\u53cd\u5bfe\u5411\u304d\u306b\u3059\u308b\u306e\u3067\uff0b\uff16\u306b\u306a\u308b\u306e\u3067\u3059\u3002<\/p>\n<p>\u305d\u3082\u305d\u3082\uff08\uff0b\uff17\uff09\uff0b\uff08\u2212\uff13\uff09\u306e\uff08\u2212\uff13\uff09\u3068\u306f\u3001\u53f3\u306b\uff13\u9032\u3082\u3046\u3068\u3059\u308b\u306e\u3092\u9006\u306b\u5de6\u306b\uff13\u9032\u3080\u3053\u3068\u3092\u8868\u3059\u3053\u3068\u304b\u3089\u3001\uff08\u2212\uff13\uff09\uff1d\uff08\uff0b\uff13\uff09\u00d7\uff08\u2212\uff11\uff09\u306e\u30de\u30a4\u30ca\u30b9\uff08\u2212\uff11\uff09\u306b\u306f\u9006\u5411\u304d\u306b\u9032\u307e\u305b\u308b\u50cd\u304d\u304c\u3042\u308b\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E3%83%9E%E3%82%A4%E3%83%8A%E3%82%B9%C3%97%E3%83%9E%E3%82%A4%E3%83%8A%E3%82%B9%EF%BC%9D%E3%83%97%E3%83%A9%E3%82%B9%E3%81%AE%E8%AB%96%E7%90%86%E7%9A%84%E6%95%B4%E5%90%88%E6%80%A7\"><\/span>\u30de\u30a4\u30ca\u30b9\u00d7\u30de\u30a4\u30ca\u30b9\uff1d\u30d7\u30e9\u30b9\u306e\u8ad6\u7406\u7684\u6574\u5408\u6027<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u6570\u5b66\u306b\u306f\u8ad6\u7406\u7684\u6574\u5408\u6027\uff08logical consistency\uff09\u304c\u3042\u308a\u307e\u3059\u3002\u3042\u308b\u3068\u3053\u308d\u3067\u6210\u308a\u7acb\u3064\u3053\u3068\u306f\u5225\u306a\u3068\u3053\u308d\u3067\u3082\u6210\u308a\u7acb\u305f\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E3%83%9E%E3%82%A4%E3%83%8A%E3%82%B9%C3%97%E3%83%9E%E3%82%A4%E3%83%8A%E3%82%B9%EF%BC%9D%E3%83%97%E3%83%A9%E3%82%B9%E3%81%AE%E8%AB%96%E7%90%86%E7%9A%84%E6%95%B4%E5%90%88%E6%80%A7_%E2%91%A0\"><\/span>\u30de\u30a4\u30ca\u30b9\u00d7\u30de\u30a4\u30ca\u30b9\uff1d\u30d7\u30e9\u30b9\u306e\u8ad6\u7406\u7684\u6574\u5408\u6027 \u2460<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u6570\u3068\u8a08\u7b97\u306e\u4e16\u754c\u306b\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u57fa\u672c\u7684\u306a\u30eb\u30fc\u30eb\u304c\u898b\u3064\u304b\u308a\u307e\u3059\u3002<br \/>\n<div class=\"clip-memobox \" style=\"background:#fafafa;color:#000000;\"><div class=\"clip-fonticon\" style=\"font-size:100%;color:#919191;border-color:#E0E0E0;\"><i class=\"st-fa st-svg-file-text-o st-css-no\" aria-hidden=\"true\"><\/i><\/div><div class=\"clip-memotext\"><p style=\"color:#000000;\">\u3014\uff11\u306e\u30eb\u30fc\u30eb\u3015\\(1\\times a=a\u3001a\\times 1\uff1da\\)<br \/>\n\u3014\uff10\u306e\u30eb\u30fc\u30eb\u3015\\(0\\times a=0\\)\u3001\\(a \\times 0=0\\)\u3001\\(a+(\u2212a)=0\\)\u3001\\(\u2212a\uff0ba=0\\)<br \/>\n\u3014\u5206\u914d\u6cd5\u5247\u3015\\(a\\times (b+c)=a\\times b+a\\times c\\)<\/p><\/div><\/div><\/p>\n<p>\u3053\u308c\u3089\u306e\u30eb\u30fc\u30eb\u304b\u3089\uff08\u2212\uff11\uff09\u00d7\uff08\u2212\uff11\uff09\uff1d\uff11\u3092\u5c0e\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<div class=\"graybox\">$$\\begin{split}<br \/>\n1+(-1)&amp;=0\\\\<br \/>\n\\color{red}{(-1)}\\times (1+(-1))&amp;=\\color{red}{(-1)}\\times 0\\qquad\\small{\u4e21\u8fba\u306b\uff08\u2212\uff11\uff09\u3092\u304b\u3051\u308b}\\\\<br \/>\n\\color{red}{(-1)}\\times1 +\\color{red}{(-1)}\\times (-1)&amp;=\\color{red}{0}\\qquad\\small{\u5de6\u8fba\u306f\u3014\u5206\u914d\u6cd5\u5247\u3015\u3001\u53f3\u8fba\u306f\u3014\uff10\u306e\u30eb\u30fc\u30eb\u3015}\\\\<br \/>\n\\color{red}{-1}+(-1)\\times (-1)&amp;=0\\qquad\\small{\u3014\uff11\u306e\u30eb\u30fc\u30eb\u3015\u304b\u3089(-1)\\times 1=\u22121}\\\\<br \/>\n(-1)\\times (-1)&amp;=\\color{red}{1}\\qquad\\small{\u3014\uff10\u306e\u30eb\u30fc\u30eb\u3015}<br \/>\n\\end{split}$$<\/div>\n<h3><span class=\"ez-toc-section\" id=\"%E3%83%9E%E3%82%A4%E3%83%8A%E3%82%B9%C3%97%E3%83%9E%E3%82%A4%E3%83%8A%E3%82%B9%EF%BC%9D%E3%83%97%E3%83%A9%E3%82%B9%E3%81%AE%E8%AB%96%E7%90%86%E7%9A%84%E6%95%B4%E5%90%88%E6%80%A7_%E2%91%A1\"><\/span>\u30de\u30a4\u30ca\u30b9\u00d7\u30de\u30a4\u30ca\u30b9\uff1d\u30d7\u30e9\u30b9\u306e\u8ad6\u7406\u7684\u6574\u5408\u6027 \u2461<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u4e09\u89d2\u95a2\u6570\u306e\u8a08\u7b97\u306e\u4e2d\u304b\u3089\uff08\u2212\uff11\uff09\u00d7\uff08\u2212\uff11\uff09\uff1d\uff11\u3092\u5c0e\u3044\u3066\u307f\u307e\u3059\u3002<\/p>\n<div class=\"clip-memobox \" style=\"background:#fafafa;color:#000000;\"><div class=\"clip-fonticon\" style=\"font-size:100%;color:#919191;border-color:#E0E0E0;\"><i class=\"st-fa st-svg-file-text-o st-css-no\" aria-hidden=\"true\"><\/i><\/div><div class=\"clip-memotext\"><p style=\"color:#000000;\">\u30142\u500d\u89d2\u306e\u516c\u5f0f\u3015\\(\\cos^\u00b2\\theta=(1+\\cos 2\\theta)\/2\\)<\/p><\/div><\/div>\n<div class=\"graybox\">$$\\begin{align*}<br \/>\n(-1)\\times (-1)&amp;= \\cos{180^\\circ}\\times \\cos{180^\\circ}\\\\<br \/>\n&amp;= \\cos^2{180^\\circ}\\\\<br \/>\n&amp;= (1+\\cos{(2\\times 180^\\circ)})\/2\\\\<br \/>\n&amp;= (1+\\cos{360^\\circ})\/2\\\\<br \/>\n&amp;= (1+1)\/2\\\\<br \/>\n&amp;= 1\\\\<br \/>\n\\end{align*}$$<\/div>\n<h3><span class=\"ez-toc-section\" id=\"%E3%83%9E%E3%82%A4%E3%83%8A%E3%82%B9%C3%97%E3%83%9E%E3%82%A4%E3%83%8A%E3%82%B9%EF%BC%9D%E3%83%97%E3%83%A9%E3%82%B9%E3%81%AE%E8%AB%96%E7%90%86%E7%9A%84%E6%95%B4%E5%90%88%E6%80%A7%E2%91%A2\"><\/span>\u30de\u30a4\u30ca\u30b9\u00d7\u30de\u30a4\u30ca\u30b9\uff1d\u30d7\u30e9\u30b9\u306e\u8ad6\u7406\u7684\u6574\u5408\u6027\u2462<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u865a\u6570i\u306fi\u00b2\uff1d\u2212\uff11\u3068\u3044\u3046\u6027\u8cea\u3092\u3082\u3064\u6570\u3067\u3059\u3002\u865a\u6570\u306e\u4e16\u754c\u306f\u4e09\u89d2\u95a2\u6570\u3068\u6df1\u304f\u7d50\u3073\u3064\u3044\u3066\u3044\u307e\u3059\u3002\u8a73\u3057\u304f\u306f\u904e\u53bb\u306e\u9023\u8f09\uff08<a href=\"https:\/\/club.informatix.co.jp\/?p=3233\">\u300e\u865a\u6570\u3068\u306f\u300f<\/a>\u3068<a href=\"https:\/\/club.informatix.co.jp\/?p=3060\">\u300e\u30aa\u30a4\u30e9\u30fc\u306e\u516c\u5f0f\u300f<\/a>\uff09\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u6b21\u306f\u305d\u306e\u4ee3\u8868\u7684\u306a\u516c\u5f0f\u3067\u3059\u3002<\/p>\n<div class=\"clip-memobox \" style=\"background:#fafafa;color:#000000;\"><div class=\"clip-fonticon\" style=\"font-size:100%;color:#919191;border-color:#E0E0E0;\"><i class=\"st-fa st-svg-file-text-o st-css-no\" aria-hidden=\"true\"><\/i><\/div><div class=\"clip-memotext\"><p style=\"color:#000000;\">\u3014\u30c9\u30fb\u30e2\u30a2\u30d6\u30eb\u306e\u516c\u5f0f\u3015\\((\\cos{x}+\\textit{i}\\sin{x})^n=\\cos{nx}+\\textit{i}\\sin{nx}\\)<\/p><\/div><\/div>\n<div class=\"graybox\">\n<div style=\"padding-left: 15%;\">\\(\\cos{\\pi}+\\textit{i}\\sin{\\pi}=-1+i\\times 0=-1\\)<br \/>\n\u306a\u306e\u3067\u3001<\/div>\n<div align=\"center\"><\/div>\n<p>$$\\begin{split}<br \/>\n(-1)\\times (-1)&amp;=(\\cos{\\pi}+\\textit{i}\\sin{\\pi})^2\\\\<br \/>\n&amp;=\\cos{2\\pi}+\\textit{i}\\sin{2\\pi}\\\\<br \/>\n&amp;=1+\\textit{i}\\times 0\\\\<br \/>\n&amp;=1<br \/>\n\\end{split}$$<\/p>\n<\/div>\n<p>&nbsp;<\/p>\n<p>\u30de\u30a4\u30ca\u30b9\u00d7\u30de\u30a4\u30ca\u30b9\uff1d\u30d7\u30e9\u30b9\u306e\u8ad6\u7406\u7684\u6574\u5408\u6027\u306f\u3082\u3063\u3068\u898b\u3064\u304b\u308a\u307e\u3059\u3002\u305d\u3046\u306a\u308c\u3070\u3001\u300c\u305d\u3046\u304d\u307e\u3063\u3066\u3044\u308b\uff08\u2212\uff11\uff09\u00d7\uff08\u2212\uff11\uff09\uff1d\uff11\u300d\u304b\u3089\u300c\u7d0d\u5f97\u3059\u308b\uff08\u2212\uff11\uff09\u00d7\uff08\u2212\uff11\uff09\uff1d\uff11\u300d\u306b\u306a\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u300c\u30de\u30a4\u30ca\u30b9\u304b\u3051\u308b\u30de\u30a4\u30ca\u30b9\u304c\u30d7\u30e9\u30b9\u306b\u306a\u308b\u306e\u306f\u3069\u3046\u3057\u3066\uff1f\u300d \u5b50\u3069\u3082\u306b\u305f\u305a\u306d\u3089\u308c\u3066\u300c\u305d\u3046\u6c7a\u307e\u3063\u3066\u3044\u308b\u306e\uff01\u300d\u3068\u306f\u7b54\u3048\u305f\u304f\u306a\u3044\u3082\u306e\u3067\u3059\u3002\uff11\uff0b\uff11\uff1d\uff12\u304b\u3089\u306f\u3058\u307e\u308a\u5206\u6570\u3069\u3046\u3057\u306e\u308f\u308a\u7b97\u307e\u3067\u3001\u5c0f\u5b66\u6821\u306e\u7b97\u6570\u306f\u300c\u305d\u3046\u3044\u3046\u3082\u306e &#8230; <\/p>\n","protected":false},"author":4,"featured_media":19118,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,464,526],"tags":[717],"class_list":["post-19114","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-4","category-hito-star-mathmatics","category-526","tag-717"],"jetpack_featured_media_url":"https:\/\/club.informatix.co.jp\/wp-content\/uploads\/2023\/09\/26064056_s-1.jpg","_links":{"self":[{"href":"https:\/\/club.informatix.co.jp\/index.php?rest_route=\/wp\/v2\/posts\/19114","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/club.informatix.co.jp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/club.informatix.co.jp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/club.informatix.co.jp\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/club.informatix.co.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=19114"}],"version-history":[{"count":53,"href":"https:\/\/club.informatix.co.jp\/index.php?rest_route=\/wp\/v2\/posts\/19114\/revisions"}],"predecessor-version":[{"id":20376,"href":"https:\/\/club.informatix.co.jp\/index.php?rest_route=\/wp\/v2\/posts\/19114\/revisions\/20376"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/club.informatix.co.jp\/index.php?rest_route=\/wp\/v2\/media\/19118"}],"wp:attachment":[{"href":"https:\/\/club.informatix.co.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=19114"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/club.informatix.co.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=19114"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/club.informatix.co.jp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=19114"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}