{"image_url":"https://cdn.blog.st-hatena.com/images/theme/og-image-1500.png","url":"https://e10s.hateblo.jp/entry/20081111/1226339916","categories":["\u6570\u5b66"],"height":"190","blog_url":"https://e10s.hateblo.jp/","type":"rich","width":"100%","author_name":"electrolysis","title":"\u30de\u30cb\u30a2\u306e\u305f\u3081\u306e n \u500d\u89d2\u30fb\u8a3c\u660e","version":"1.0","published":"2008-11-11 02:58:36","description":"\u524d\u56de \u306e\u7d9a\u304d\u3068\u3057\u3066\u3001\u4eca\u5ea6\u306f\u8a3c\u660e\u3057\u3066\u307f\u308b\u3002\u305f\u3060\u3057\u30ab\u30f3\u30cb\u30f3\u30b0\u3057\u307e\u304f\u308a\u3002\u307e\u305a\u3001$z^n - e^{j2n\\theta}$\uff08\u3053\u308c\u3092 (i) \u3068\u3059\u308b\uff09\u3092\u8003\u3048\u308b\u3002(i) \u306e\u6839\u306f\u6b21\u306e\u3088\u3046\u306b\u8868\u3055\u308c\u308b\u3002$$ e^{j\\qty(2\\theta + \\frac{k}{n} \\cdot 2\\pi)} = e^{j2\\qty(\\theta + \\frac{k}{n}\\pi)} $$ \u305f\u3060\u3057 $k = 0,1,2,\\ldots,n-1$\u5f93\u3063\u3066\u3001(i) \u306f\u6b21\u306e\u3088\u3046\u306b\u56e0\u6570\u5206\u89e3\u3067\u304d\u308b\u3002$$ z^n - e^{j2n\\theta} = \\prod_{k=0}^{n-1} \\qty(z - e^{j2\\qty(\\theta + \\\u2026","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fe10s.hateblo.jp%2Fentry%2F20081111%2F1226339916\" title=\"\u30de\u30cb\u30a2\u306e\u305f\u3081\u306e n \u500d\u89d2\u30fb\u8a3c\u660e - \u30e8\u30fc\u30ad\u30e7\u30af\u30c7\u30a4\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_title":"\u30e8\u30fc\u30ad\u30e7\u30af\u30c7\u30a4","provider_url":"https://hatena.blog","author_url":"https://blog.hatena.ne.jp/electrolysis/","provider_name":"Hatena Blog"}