{"provider_name":"Hatena Blog","image_url":"https://chart.apis.google.com/chart?cht=tx&chl=%5Csin%5E2%20x","width":"100%","published":"2019-03-03 12:40:56","description":"\u6982\u8981 \u30aa\u30a4\u30e9\u30fc\u306e\u516c\u5f0f\u3092\u53d7\u3051\u5165\u308c\u308b\u3068\u4e09\u89d2\u95a2\u6570\u3092\u5225\u306e\u5f62\u5f0f\u3067\u8868\u305b\u308b\u3002 \u5c0e\u51fa \u30aa\u30a4\u30e9\u30fc\u306e\u516c\u5f0f\u3092\u518d\u5ea6\u66f8\u304f\u3002 \\begin{eqnarray}e^{ix}=\\cos x+i\\sin x\\end{eqnarray} \u5f0f\u4e2d\u306e\u3092\u306b\u7f6e\u304d\u63db\u3048\u3066\u307f\u308b\u3002 \\begin{eqnarray}e^{-ix}&=&\\cos (-x)+i\\sin (-x)\\\\&=&\\cos x-i\\sin x\\end{eqnarray} \u306f\u5076\u95a2\u6570\u306a\u306e\u3067\u5909\u5316\u3057\u306a\u3044\u3002\u306f\u5947\u95a2\u6570\u306a\u306e\u3067\u30de\u30a4\u30ca\u30b9\u304c\u4ed8\u304f\u3002 \u30de\u30af\u30ed\u30fc\u30ea\u30f3\u5c55\u958b\u7248\u306e\u8868\u8a18\u3067\u3082\u78ba\u8a8d\u3057\u3066\u304a\u304f\u3002\u307e\u305a\u5143\u306e\u5f62\u3002 \\begin{eqnarray}e^{ix}&=&\\left(1-\\frac{1}{2!}x^2\u2026","blog_title":"A4\u306e\u5b87\u5b99","author_url":"https://blog.hatena.ne.jp/dai-ig/","url":"https://a4.hateblo.jp/entry/2019/03/03/124056","provider_url":"https://hatena.blog","author_name":"dai-ig","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fa4.hateblo.jp%2Fentry%2F2019%2F03%2F03%2F124056\" title=\"\u30aa\u30a4\u30e9\u30fc\u306e\u516c\u5f0f\u304b\u3089\u5c0e\u304b\u308c\u308b\u4e09\u89d2\u95a2\u6570\u306e\u8a18\u6cd5 - A4\u306e\u5b87\u5b99\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_url":"https://a4.hateblo.jp/","title":"\u30aa\u30a4\u30e9\u30fc\u306e\u516c\u5f0f\u304b\u3089\u5c0e\u304b\u308c\u308b\u4e09\u89d2\u95a2\u6570\u306e\u8a18\u6cd5","type":"rich","height":"190","categories":["\u6570\u5b66","\u5e7e\u4f55","\u8907\u7d20\u6570"],"version":"1.0"}