{"blog_title":"\u5fa1\u5149\u5802\u4e16\u754c~Pulin\u306e\u65e5\u8a18","image_url":null,"url":"https://pulin.hateblo.jp/entry/20170502/1493704524","version":"1.0","title":"(xy)*=x*y*","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fpulin.hateblo.jp%2Fentry%2F20170502%2F1493704524\" title=\"(xy)*=x*y* - \u5fa1\u5149\u5802\u4e16\u754c~Pulin\u306e\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","type":"rich","published":"2017-05-02 14:55:24","author_url":"https://blog.hatena.ne.jp/Pulin/","categories":["\u79c1\u4e8b"],"blog_url":"https://pulin.hateblo.jp/","height":"190","description":"\u8907\u7d20\u6570x,y\u306e\u7a4dxy\u306e\u8907\u7d20\u5171\u5f79(xy)*\u304cx*y*\u306b\u306a\u308b\u304b\u6c17\u306b\u306a\u3063\u305f\u306e\u3067\u78ba\u304b\u3081\u3066\u307f\u308b\u3002 x=x1+ix2 y=y1+iy2 \u3068\u3057\u3066 xy =(x1+ix2)(y1+iy2) =x1y1+ix1y2+ix2y1-x2y2 =x1y1-x2y2+i(x1y2+x2y1) (xy)* =x1y1-x2y2-i(x1y2+x2y1) x*y* =(x1-ix2)(y1-iy2) =x1y1-ix1y2-ix2y1-x2y2 =x1y1-x2y2-i(x1y2+x2y1) \u3086\u3048\u306b (xy)*=x*y* \u3067\u3042\u308b\u3053\u3068\u304c\u78ba\u304b\u3081\u3089\u308c\u305f\u3002 xy*=0\u306a\u3089x*y=0\u306a\u306e\u304b\u3082\u78ba\u304b\u3081\u3066\u307f\u308b\u3002 xy* =(x1+ix2)\u2026","provider_name":"Hatena Blog","provider_url":"https://hatena.blog","width":"100%","author_name":"Pulin"}