{"id":3233,"date":"2016-09-16T13:31:04","date_gmt":"2016-09-16T13:31:04","guid":{"rendered":"http:\/\/club.informatix.co.jp\/?p=3233"},"modified":"2026-03-09T15:04:59","modified_gmt":"2026-03-09T06:04:59","slug":"%e4%ba%ba%e3%81%a8%e6%98%9f%e3%81%a8%e3%81%a8%e3%82%82%e3%81%ab%e3%81%82%e3%82%8b%e6%95%b0%e5%ad%a6%e3%80%80%e7%ac%ac9%e5%9b%9e","status":"publish","type":"post","link":"https:\/\/club.informatix.co.jp\/?p=3233","title":{"rendered":"\u865a\u6570\u3068\u306f\uff1f \u8907\u7d20\u6570\u30fb\u865a\u6570i\u306b\u3064\u3044\u3066\u89e3\u8aac"},"content":{"rendered":"<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-3244\" src=\"http:\/\/club.informatix.co.jp\/wp-content\/uploads\/sites\/2\/2016\/09\/20160915_1.jpg\" alt=\"20160915_1\" width=\"550\" height=\"344\" \/><\/p>\n<p>\u9023\u8f09\u306f\u3001<a title=\"\u4eba\u3068\u661f\u3068\u3068\u3082\u306b\u3042\u308b\u6570\u5b66\u3000\u7b2c2\u56de\" href=\"http:\/\/club.informatix.co.jp\/?p=2338\" target=\"_blank\" rel=\"noopener noreferrer\">\u4e09\u89d2\u95a2\u6570<\/a>\u3001<a title=\"\u4eba\u3068\u661f\u3068\u3068\u3082\u306b\u3042\u308b\u6570\u5b66\u3000\u7b2c6\u56de\" href=\"http:\/\/club.informatix.co.jp\/?p=2715\" target=\"_blank\" rel=\"noopener noreferrer\">\u30b8\u30e7\u30f3\u30fb\u30cd\u30a4\u30d4\u30a2\u5bfe\u6570\u8a95\u751f\u7269\u8a9e<\/a>\u3092\u7d4c\u3066<a title=\"\u4eba\u3068\u661f\u3068\u3068\u3082\u306b\u3042\u308b\u6570\u5b66\u3000\u7b2c8\u56de\" href=\"http:\/\/club.informatix.co.jp\/?p=3060\" target=\"_blank\" rel=\"noopener noreferrer\">\u30aa\u30a4\u30e9\u30fc\u306e\u516c\u5f0f\u8a95\u751f\u7269\u8a9e<\/a>\u307e\u3067\u9032\u307f\u307e\u3057\u305f\u3002<\/p>\n<p>\u30aa\u30a4\u30e9\u30fc\u306e\u516c\u5f0f\u3067\u306f\u3001\u865a\u6570i\u304c\u3001sin\u3001log\u3001e\u3001\u03c0\u3089\u3092\u3064\u306a\u304e\u5408\u308f\u305b\u308b\u5f79\u76ee\u3092\u679c\u305f\u3059\u98a8\u666f\u3092\u898b\u3066\u3082\u3089\u3044\u307e\u3057\u305f\u3002\u81ea\u7136\u6570\u3001\u6709\u7406\u6570\u3001\u7121\u7406\u6570\u3001\u5b9f\u6570\u3068\u7d9a\u304f\u6570\u306e\u4e16\u754c\u304c\u3055\u3089\u306b\u5e83\u304c\u308b\u4e2d\u3067\u3001\u73fe\u308c\u3066\u304d\u305f\u300c\u65b0\u3057\u3044\u6570\u300d\u304c\u865a\u6570\u3067\u3059\u3002<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u76ee\u6b21<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-69e8876a27fca\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-69e8876a27fca\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/club.informatix.co.jp\/?p=3233\/#%E3%83%94%E3%83%B3%E3%81%A8%E6%9D%A5%E3%81%AA%E3%81%84%E8%99%9A%E6%95%B0\" >\u30d4\u30f3\u3068\u6765\u306a\u3044\u865a\u6570<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/club.informatix.co.jp\/?p=3233\/#%E8%99%9A%E6%95%B0%E3%81%A8%E3%81%AF\" >\u865a\u6570\u3068\u306f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/club.informatix.co.jp\/?p=3233\/#%E6%95%B0%E7%9B%B4%E7%B7%9A%E3%81%8B%E3%82%89%E6%95%B0%E5%B9%B3%E9%9D%A2%E3%81%B8\" >\u6570\u76f4\u7dda\u304b\u3089\u6570\u5e73\u9762\u3078<\/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=3233\/#%E6%95%B0%E3%82%92%E7%9F%A2%E5%8D%B0%E3%81%A8%E8%A6%8B%E3%82%8B\" >\u6570\u3092\u77e2\u5370\u3068\u898b\u308b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/club.informatix.co.jp\/?p=3233\/#%E3%80%8C%C3%97i%E3%80%8D%E3%81%AE%E8%A7%A3%E9%87%88\" >\u300c\u00d7i\u300d\u306e\u89e3\u91c8<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/club.informatix.co.jp\/?p=3233\/#%E5%BF%9C%E7%94%A8%E5%95%8F%E9%A1%8C%E3%81%9D%E3%81%AE1%E3%80%80i%C3%97i\" >\u5fdc\u7528\u554f\u984c\u305d\u306e1\u3000i\u00d7i=?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/club.informatix.co.jp\/?p=3233\/#%E5%BF%9C%E7%94%A8%E5%95%8F%E9%A1%8C%E3%81%9D%E3%81%AE2%E3%80%80%EF%BC%88-1%EF%BC%89%C3%97%EF%BC%88-1%EF%BC%89\" 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class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u305d\u306e\u865a\u6570\u304c\u5b9f\u6570\u3068\u540c\u3058\u3088\u3046\u306b\u6570\u5b66\u8005\u306b\u53d7\u3051\u5165\u308c\u3089\u308c\u308b\u306b\u306f\u3001\u305d\u306e\u5b9f\u529b\u304c\u660e\u3089\u304b\u306b\u3055\u308c\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3057\u305f\u3002<\/p>\n<p>\u30aa\u30a4\u30e9\u30fc\u306e\u516c\u5f0f\u306f\u865a\u6570\u306e\u5b9f\u529b\u3092\u79c1\u305f\u3061\u306b\u307e\u3056\u307e\u3056\u3068\u898b\u305b\u3064\u3051\u308b\u3082\u306e\u3068\u306a\u308a\u307e\u3057\u305f\u3002\u306f\u305f\u3057\u306620\u4e16\u7d00\u3001\u9769\u65b0\u7406\u8ad6\u3067\u3042\u308b\u91cf\u5b50\u529b\u5b66\u306f\u30aa\u30a4\u30e9\u30fc\u306e\u516c\u5f0f\u306b\u652f\u3048\u3089\u308c\u3066\u8a95\u751f\u3057\u307e\u3057\u305f\u3002<\/p>\n<p>\u91cf\u5b50\u529b\u5b66\u3092\u57fa\u790e\u7406\u8ad6\u3068\u3057\u3066\u534a\u5c0e\u4f53\u3084\u30ec\u30fc\u30b6\u30fc\u306a\u3069\u304c\u767a\u9054\u3057\u3001\u73fe\u5728\u306e\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306f\u51fa\u6765\u4e0a\u304c\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u6587\u7ae0\u304c\u51e6\u7406\u30fb\u8868\u793a\u3055\u308c\u3066\u3044\u308bPC\u3084\u30b9\u30de\u30db\u306f\u865a\u6570\u306b\u652f\u3048\u3089\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u305d\u3046\u306f\u3044\u3063\u3066\u3082\u865a\u6570\u304c\u30b9\u30de\u30db\u3068\u7e4b\u304c\u3063\u3066\u3044\u308b\u3053\u3068\u304c\u5b9f\u611f\u3067\u304d\u308b\u308f\u3051\u3067\u306f\u306a\u3044\u306e\u3067\u3001\u865a\u6570\u306b\u30d4\u30f3\u3068\u304f\u308b\u306f\u305a\u3082\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u81ea\u7136\u6570\u3001\u6574\u6570\u3001\u6709\u7406\u6570\u3001\u7121\u7406\u6570\u3068\u3044\u3063\u305f\u5b9f\u6570\u306f\u8eab\u306e\u307e\u308f\u308a\u306b\u3042\u308b\u30e2\u30ce\u3068\u306e\u7e4b\u304c\u308a\u3092\u5b9f\u611f\u3067\u304d\u307e\u3059\u3002\u925b\u7b46\u306e\u672c\u6570\u306f\u81ea\u7136\u6570\u3001\u30d4\u30b6\u306e\u5206\u5272\u306e\u4ed5\u65b9\u306b\u5206\u6570\uff08\u6709\u7406\u6570\uff09\u3001\u6b63\u65b9\u5f62\u306e\u5bfe\u89d2\u7dda\u306e\u9577\u3055\u306b\u306f\u221a\u3092\u4f7f\u3063\u305f\u7121\u7406\u6570\u304c\u73fe\u308c\u3066\u304d\u307e\u3059\u3002<\/p>\n<p>\u73fe\u5b9f\u4e16\u754c\u3067\u306f\u306a\u304f\u6570\u5b66\u4e16\u754c\u306e\u4e2d\u3060\u3051\u3067\u865a\u6570\u306e\u30ea\u30a2\u30ea\u30c6\u30a3\u304c\u7372\u5f97\u3055\u308c\u3066\u3044\u304f\u98a8\u666f\u3092\u8ffd\u3063\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E8%99%9A%E6%95%B0%E3%81%A8%E3%81%AF\"><\/span>\u865a\u6570\u3068\u306f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u865a\u6570\u3068\u306f<strong>\u5b9f\u6570\u3067\u306f\u306a\u3044\u6570<\/strong>\u306e\u3053\u3068\u3092\u3044\u3044\u307e\u3059\u3002\u865a\u6570\u3092\u8868\u3059\u5358\u4f4d\u3068\u3057\u3066\u300ci\u300d\u304c\u4f7f\u308f\u308c\u307e\u3059\u3002<\/p>\n<p>\u8907\u7d20\u6570\u306f<strong>\u5b9f\u6570\u3068\u865a\u6570\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u3082\u306e<\/strong>\u3092\u3044\u3044\u307e\u3059\u3002<\/p>\n<p>\u4f8b\uff09<br \/>\n\u30fb\u5b9f\u6570\uff1a1, -2, +3<br \/>\n\u30fb\u865a\u6570\uff1ai, 1i, -2i, +3i<br \/>\n\u30fb\u8907\u7d20\u6570\uff1a\u22121+2i, 3\u22124i, 5+6i<\/p>\n<p>\u865a\u6570\u306f2\u6b21\u65b9\u7a0b\u5f0f\u30843\u6b21\u65b9\u7a0b\u5f0f\u3068\u3044\u3063\u305f\u65b9\u7a0b\u5f0f\u306e\u4e16\u754c\u306b\u51fa\u73fe\u3057\u3066\u304d\u307e\u3057\u305f\u3002<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-3245\" src=\"http:\/\/club.informatix.co.jp\/wp-content\/uploads\/sites\/2\/2016\/09\/20160915_2.jpg\" alt=\"20160915_2\" width=\"550\" height=\"344\" \/><\/p>\n<p>\u308f\u304c\u56fd\u306e\u6570\u5b66\u306e\u6388\u696d\u3067\u3082\u3001\u3044\u304b\u306a\u308b2\u6b21\u65b9\u7a0b\u5f0f\u3082\u865a\u6570\u306e\u304a\u304b\u3052\u3067\u89e3\u304f\u3053\u3068\u304c\u53ef\u80fd\u306b\u306a\u308b\u8aac\u660e\u304c\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u3057\u304b\u3057\u3001\u805e\u304f\u5074\u306e\u865a\u6570\u3078\u306e\u53cd\u5fdc\u306f\u30a4\u30de\u30a4\u30c1\u3067\u3059\u3002<br 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\/>\n\u3068\u3044\u3046\u53cd\u5fdc\u306b\u306a\u308b\u306e\u306f\u81f3\u3063\u3066\u81ea\u7136\u3067\u3059\u3002<\/p>\n<p>\u65b9\u7a0b\u5f0f\u3092\u89e3\u3044\u3066\u3044\u304f\u3068\u6700\u5f8c\u306b\u865a\u6570\u304c\u73fe\u308c\u3066\u89e3\u3051\u308b\u3068\u3044\u3046\u98a8\u666f\u3067\u306f\u3001\u865a\u6570\u306f\u7d50\u679c\u8ad6\u3067\u3059\u3002<\/p>\n<p>\u305d\u3082\u305d\u30820\u3084\u30de\u30a4\u30ca\u30b9\u306e\u6982\u5ff5\u3067\u3059\u3089\u3001\u79c1\u305f\u3061\u4eba\u985e\u306f\u5343\u5e74\u30b9\u30d1\u30f3\u306e\u9577\u3044\u5e74\u6708\u3092\u304b\u3051\u3066\u8eab\u306e\u307e\u308f\u308a\u306e\u73fe\u8c61\u3084\u30e2\u30ce\u306b\u4f7f\u3048\u308b\u3053\u3068\u306b\u6c17\u3065\u3044\u3066\u3044\u3063\u305f\u306e\u3067\u3059\u3002<\/p>\n<p>\u72b6\u6cc1\u304c\u7570\u306a\u308b\u865a\u6570\u306b\u3068\u3063\u3066\u306f\u3001\u305d\u308c\u4ee5\u4e0a\u306e\u30d7\u30ed\u30bb\u30b9\u304c\u5fc5\u8981\u3060\u3063\u305f\u3053\u3068\u306f\u60f3\u50cf\u306b\u96e3\u304f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u305d\u306e\u9577\u3044\u6642\u9593\u3092\u518d\u73fe\u3059\u308b\u3053\u3068\u306f\u4e0d\u53ef\u80fd\u3067\u3059\u3002\u3057\u304b\u3057\u865a\u6570\u3092\u300c\u898b\u3066\u305d\u308c\u3068\u5206\u304b\u308b\u300d\u3088\u3046\u306b\u8aac\u660e\u3059\u308b\u3053\u3068\u306f\u53ef\u80fd\u3067\u3059\u3002<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E6%95%B0%E7%9B%B4%E7%B7%9A%E3%81%8B%E3%82%89%E6%95%B0%E5%B9%B3%E9%9D%A2%E3%81%B8\"><\/span>\u6570\u76f4\u7dda\u304b\u3089\u6570\u5e73\u9762\u3078<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u865a\u6570\u3092\u7528\u3044\u308b\u3068\u65b9\u7a0b\u5f0f\u304c\u89e3\u3051\u308b\u306e\u306f\u3001\u865a\u6570i\u304c\u6b21\u306e\u6027\u8cea\u3092\u6301\u3064\u3053\u3068\u304c\u767a\u7aef\u3067\u3059\u3002<\/p>\n<p style=\"text-align: center;\">i\u00d7i=-1<\/p>\n<p>\u3068\u540c\u6642\u306b\u3001\u3053\u306e\u865a\u6570\u30c7\u30d3\u30e5\u30fc\u306e\u98a8\u666f\u304c\u521d\u5b66\u8005\u306b\u9055\u548c\u611f\u3092\u62b1\u304b\u305b\u308b\u539f\u56e0\u3067\u3082\u3042\u308a\u307e\u3059\u3002\u305d\u3053\u3067\u3001\u865a\u6570i\u3092\u3053\u308c\u3068\u306f\u5225\u306a\u8996\u70b9\u304b\u3089\u59cb\u3081\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<p>\u306f\u305f\u3057\u3066\u3001i\u00d7i=-1\u304c\u7d50\u8ad6\u3068\u3057\u3066\u73fe\u308c\u3066\u304f\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u56f3\u306e\u3088\u3046\u306b\u6570\u306f\u70b9\u3068\u3057\u3066\u8868\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3082\u306e\u3055\u3057\u3084\u6e29\u5ea6\u8a08\u306b\u6570\u5b57\u304c\u523b\u5370\u3055\u308c\u3066\u3044\u308b\u98a8\u666f\u3068\u540c\u3058\u3067\u3059\u3002\u3053\u308c\u304c\u6570\u306e\u5e7e\u4f55\u5b66\u7684\u8868\u73fe\u3067\u3042\u308b\u300c\u6570\u76f4\u7dda\u300d\u3067\u3059\u3002<\/p>\n<p><img decoding=\"async\" class=\"size-full wp-image-3246 aligncenter\" src=\"http:\/\/club.informatix.co.jp\/wp-content\/uploads\/sites\/2\/2016\/09\/20160915_3.jpg\" alt=\"20160915_3\" width=\"550\" height=\"344\" \/><\/p>\n<p>\u3055\u3066\u3001\u76f4\u7dda\u4e0a\u306e\u70b9\u306b\u6570\u3092\u5bfe\u5fdc\u3055\u305b\u308b\u306e\u3067\u3042\u308c\u3070\u3001\u5e73\u9762\u4e0a\u306e\u70b9\u306b\u3082\u6570\u3092\u5bfe\u5fdc\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002\u5e73\u9762\u3082\u76f4\u7dda\u540c\u69d8\u306b\u70b9\u306e\u96c6\u307e\u308a\u3067\u3067\u304d\u3066\u3044\u308b\u304b\u3089\u3067\u3059\u3002<\/p>\n<p>\u300c\u6570\u76f4\u7dda\u300d\u306a\u3089\u306c\u300c\u6570\u5e73\u9762\u300d\u3067\u3059\u3002<\/p>\n<p>\u6570\u5e73\u9762\u3067\u306f\u3001x\u8ef8\u304c\u3044\u308f\u3086\u308b\u6570\u76f4\u7dda\uff08\u5b9f\u6570\uff09\u3092\u8868\u3057\u3066\u3044\u307e\u3059\u3002y\u8ef8\u4e0a\u306b\u3042\u308b\u6570\u3092\u8868\u3059\u306e\u306b\u767b\u5834\u3059\u308b\u306e\u304c\u865a\u6570i\u3067\u3059\u3002<\/p>\n<p>\u6570\u5e73\u9762\u4e0a\u306e\u3059\u3079\u3066\u306e\u70b9\u306f\u300c+2+2i\u300d\u306e\u5f62\u3067\u8868\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u865a\u6570i\u30682\u3064\u306e\u5b9f\u6570x\u3068y\u3092\u5408\u308f\u305b\u305f\u8907\u5408\u7684\u306a\uff08complex\uff09\u6570\u3068\u3044\u3046\u3053\u3068\u3067x+iy\u306f\u8907\u7d20\u6570\uff08complex number\uff09\u3068\u547c\u3070\u308c\u307e\u3059\u3002<\/p>\n<p style=\"text-align: center;\">\u8907\u7d20\u6570\u3000x+iy\uff08x,y\u306f\u5b9f\u6570\uff09<\/p>\n<p>\u6570\u5e73\u9762\u306e\u30a2\u30a4\u30c7\u30a3\u30a2\u306f\u6570\u5b66\u8005\u30ac\u30a6\u30b9\uff081777-1855\uff09\u306b\u3088\u3063\u3066\u8003\u6848\u3055\u308c\u307e\u3057\u305f\u3002\u30ac\u30a6\u30b9\u5e73\u9762\u3068\u547c\u3070\u308c\u308b\u6570\u5e73\u9762\u306f\u3001\u8907\u7d20\u6570\u5e73\u9762\u3001\u8907\u7d20\u5e73\u9762\u306a\u3069\u3068\u3082\u547c\u3070\u308c\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-3247\" src=\"http:\/\/club.informatix.co.jp\/wp-content\/uploads\/sites\/2\/2016\/09\/20160915_4.jpg\" alt=\"20160915_4\" width=\"550\" height=\"344\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E6%95%B0%E3%82%92%E7%9F%A2%E5%8D%B0%E3%81%A8%E8%A6%8B%E3%82%8B\"><\/span>\u6570\u3092\u77e2\u5370\u3068\u898b\u308b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u6570\u5e73\u9762\u3068\u3044\u3046\u5927\u304d\u306a\u6e96\u5099\u304c\u3067\u304d\u305f\u3068\u3053\u308d\u3067\u3001\u70b9\u3068\u898b\u306a\u3057\u3066\u304d\u305f\u6570\u304c\u77e2\u5370\u3068\u3057\u3066\u898b\u308c\u308b\u3053\u3068\u3092\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-3239\" src=\"http:\/\/club.informatix.co.jp\/wp-content\/uploads\/sites\/2\/2016\/09\/20160915_5.jpg\" alt=\"20160915_5\" width=\"550\" height=\"344\" \/><\/p>\n<p>\u6570\u5e73\u9762\u4e0a\u306e\u70b9\u306b\u5bfe\u3057\u3066\u3001\u539f\u70b9O\u304b\u3089\u5f15\u3044\u305f\u77e2\u5370\u3092\u5bfe\u5fdc\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u56f3\u306e\u3088\u3046\u306b+1\u3068\u3044\u3046\u6570\u306b\u8d64\u77e2\u5370\u3092\u3001+i\u3068\u3044\u3046\u6570\u306b\u9ec4\u8272\u77e2\u5370\u3092\u5bfe\u5fdc\u3055\u305b\u307e\u3059\u3002<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E3%80%8C%C3%97i%E3%80%8D%E3%81%AE%E8%A7%A3%E9%87%88\"><\/span>\u300c\u00d7i\u300d\u306e\u89e3\u91c8<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>1\u3068\u306f\u6b21\u306e\u30eb\u30fc\u30eb\u3092\u6301\u3063\u305f\u6570\u3067\u3059\u3002<\/p>\n<p style=\"text-align: center;\">a\u00d71=a\u30011\u00d7a=a<\/p>\n<p>\u865a\u6570i\u306b\u5bfe\u3057\u3066\u3082\u3053\u306e\u30eb\u30fc\u30eb\u304c\u9069\u5fdc\u3055\u308c\u308b\u3068\u3059\u308c\u3070<\/p>\n<p style=\"text-align: center;\">1\u00d7i\uff1di<\/p>\n<p>\u3068\u3044\u3046\u304b\u3051\u7b97\u306e\u5f0f\u304c\u6210\u308a\u7acb\u3061\u307e\u3059\u3002\u3053\u308c\u3092<\/p>\n<p style=\"text-align: center;\">\uff08+1\uff09\u00d7i\uff1d+i<\/p>\n<p>\u3068\u3057\u3066\u3001\u6570\u5e73\u9762\u306e\u4e0a\u30672\u3064\u306e\u6570+1\u3068+i\u306e\u95a2\u4fc2\u3092\u773a\u3081\u3066\u307f\u307e\u3059\u3002\u3059\u308b\u3068\u3001\u6b21\u306e\u3088\u3046\u306b\u8a00\u3044\u63db\u3048\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p style=\"text-align: center;\">\u300c+1\u300d\u306b\u300c\u00d7i\u300d\u3059\u308b\u3068\u3001\u300c+i\u300d\u306b\u306a\u308b<\/p>\n<p>\u3055\u3089\u306b\u3001\u77e2\u5370\u3092\u7528\u3044\u308b\u3053\u3068\u3067\u6b21\u306e\u3088\u3046\u306b\u8a00\u3044\u63db\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p style=\"text-align: center;\">\u8d64\u77e2\u5370\u300c+1\u300d\u3092\u300c90\u5ea6\u53cd\u6642\u8a08\u56de\u308a\u306b\u56de\u8ee2\u300d\u3059\u308b\u3068\u3001\u9ec4\u8272\u77e2\u5370\u300c+i\u300d\u306b\u306a\u308b<\/p>\n<p>\u3057\u305f\u304c\u3063\u3066\u3001\u3053\u308c\u30892\u3064\u306e\u6587\u7ae0\u304b\u3089\u6b21\u304c\u8a00\u3048\u307e\u3059\u3002<\/p>\n<p style=\"text-align: center;\">\u300c\u00d7i\u300d=\u300c90\u5ea6\u53cd\u6642\u8a08\u56de\u308a\u306b\u56de\u8ee2\u300d<\/p>\n<p>\u3053\u308c\u3092\u865a\u6570i\u306e\u30c7\u30d3\u30e5\u30fc\u98a8\u666f\u3068\u898b\u308b\u306e\u3067\u3059\u3002\u3055\u3042\u3001\u3053\u3053\u304b\u3089\u898b\u3048\u3066\u304f\u308b\u865a\u6570i\u306e\u98a8\u666f\u3092\u4e00\u6c17\u3092\u773a\u3081\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E5%BF%9C%E7%94%A8%E5%95%8F%E9%A1%8C%E3%81%9D%E3%81%AE1%E3%80%80i%C3%97i\"><\/span>\u5fdc\u7528\u554f\u984c\u305d\u306e1\u3000i\u00d7i=?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u305d\u308c\u3067\u306f\u3001i\u00d7i\u3092\u3053\u306e\u89e3\u91c8\u3092\u7528\u3044\u3066\u8003\u3048\u3066\u307f\u307e\u3059\u3002<\/p>\n<p>\u6570\u5b66\u3067\u306f\u56de\u8ee2\u306e\u5411\u304d\u3092\u3001\u53cd\u6642\u8a08\u56de\u308a\u3092\u6b63\u3001\u6642\u8a08\u56de\u308a\u3092\u8ca0\u3068\u533a\u5225\u3057\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u300c90\u5ea6\u53cd\u6642\u8a08\u56de\u308a\u306b\u56de\u8ee2\u300d\u3068\u306f\u300c+90\u5ea6\u56de\u8ee2\u300d\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>i\u00d7i\u3092\uff08+i\uff09\u00d7i\u3068\u3057\u3066\u3001+i\u3092\u9ec4\u8272\u77e2\u5370\u3068\u3059\u308c\u3070\u3001+i\u00d7i\u3068\u306f\u9ec4\u8272\u77e2\u5370\u3092+90\u5ea6\u56de\u8ee2\u3057\u305f\u77e2\u5370\u3092\u8868\u3059\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u3059\u308b\u3068\u3001\u305d\u306e\u77e2\u5370\u304c-1\u3092\u8868\u3059\u9752\u77e2\u5370\u3067\u3042\u308b\u3053\u3068\u306f\u56f3\u304b\u3089\u4e00\u76ee\u77ad\u7136\u3067\u3057\u3087\u3046\u3002\u3059\u306a\u308f\u3061\u3001\u6b21\u304c\u5f97\u3089\u308c\u305f\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p style=\"text-align: center;\">i\u00d7i=-1<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-3240\" src=\"http:\/\/club.informatix.co.jp\/wp-content\/uploads\/sites\/2\/2016\/09\/20160915_6.jpg\" alt=\"20160915_6\" width=\"550\" height=\"344\" \/><\/p>\n<p>\u3053\u3046\u3057\u3066\u3001i\u00d7i=\u22121\u306f\u7d50\u8ad6\u3068\u3057\u3066\u73fe\u308c\u3066\u304d\u307e\u3057\u305f\u3002i\u00d7i=\u22121\u3092\u9d5c\u5451\u307f\u306b\u3057\u3066\u3044\u305f\u6642\u3068\u306f\u5370\u8c61\u304c\u9055\u3046\u306f\u305a\u3067\u3059\u3002<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E5%BF%9C%E7%94%A8%E5%95%8F%E9%A1%8C%E3%81%9D%E3%81%AE2%E3%80%80%EF%BC%88-1%EF%BC%89%C3%97%EF%BC%88-1%EF%BC%89\"><\/span>\u5fdc\u7528\u554f\u984c\u305d\u306e2\u3000\uff08-1\uff09\u00d7\uff08-1\uff09=?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-3241\" src=\"http:\/\/club.informatix.co.jp\/wp-content\/uploads\/sites\/2\/2016\/09\/20160915_7.jpg\" alt=\"20160915_7\" width=\"550\" height=\"344\" \/><\/p>\n<p>\u300c\u00d7i\u300d\uff1d\u300c+90\u5ea6\u56de\u8ee2\u300d\u3092\u5225\u306a\u554f\u984c\u306b\u3082\u5fdc\u7528\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u307e\u305a\u3001\u5fdc\u7528\u554f\u984c\u305d\u306e1\u306e\u7d50\u679c\u300ci\u00d7i=\u22121\u300d\u3092\u7528\u3044\u3066\u6b21\u306e\u3088\u3046\u306b\u5909\u5f62\u3057\u307e\u3059\u3002<\/p>\n<p style=\"text-align: center;\">\uff08-1\uff09\u00d7\uff08-1\uff09=\uff08-1\uff09\u00d7\uff08i\u00d7i\uff09<\/p>\n<p>\u6b21\u306b\u3001\uff08-1\uff09\u00d7i\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u9752\u77e2\u5370\uff08-1\uff09\u309290\u5ea6\u56de\u8ee2\u3059\u308b\u3053\u3068\u3092\u610f\u5473\u3059\u308b\u306e\u3067\u9ec4\u8272\u77e2\u5370\u2212i\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p style=\"text-align: center;\">\uff08-1\uff09\u00d7i=\u2212i<\/p>\n<p>\u3053\u3053\u307e\u3067\u307e\u3068\u3081\u308b\u3068\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p style=\"padding-left: 140px;\">\uff08-1\uff09\u00d7\uff08-1\uff09=\uff08-1\uff09\u00d7\uff08i\u00d7i\uff09<\/p>\n<p style=\"padding-left: 240px;\">=\uff5b\uff08-1\uff09\u00d7i\uff5d\u00d7i<\/p>\n<p style=\"padding-left: 240px;\">=\u2212i\u00d7i<\/p>\n<p>\u6700\u5f8c\u306b\u3001\u9ec4\u8272\u77e2\u5370\uff08\u2212i\uff09\u3092\u300c\u00d7i\u300d\u3059\u306a\u308f\u3061+90\u5ea6\u56de\u8ee2\u3059\u308b\u306e\u3067\u3001\u8d64\u77e2\u5370\u3067\u3042\u308b+1\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p style=\"padding-left: 140px;\">\uff08-1\uff09\u00d7\uff08-1\uff09=\uff08-1\uff09\u00d7\uff08i\u00d7i\uff09<\/p>\n<p style=\"padding-left: 240px;\">=\uff5b\uff08-1\uff09\u00d7i\uff5d\u00d7i<\/p>\n<p style=\"padding-left: 240px;\">=\u2212i\u00d7i<\/p>\n<p style=\"padding-left: 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