{"blog_title":"\u62c5\u5f53\u6388\u696d\u306e\u3053\u3068\u3068\u304b\uff0c\u306a\u3093\u304b\u305d\u3046\u3044\u3063\u305f\u8a71\u984c\u3002","published":"2019-03-12 00:05:06","author_url":"https://blog.hatena.ne.jp/Iek/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fiek.hatenablog.com%2Fentry%2F2019%2F03%2F12%2F000506\" title=\"\u3010\u9ad8\u6821\u6570\u5b66\u306e\u30c4\u30dc\u3011 \u3068\u3042\u308b2\u6b21\u5f0f\u306e\u6700\u5927\u5024\u3002 - \u62c5\u5f53\u6388\u696d\u306e\u3053\u3068\u3068\u304b\uff0c\u306a\u3093\u304b\u305d\u3046\u3044\u3063\u305f\u8a71\u984c\u3002\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","categories":["mathematics"],"image_url":null,"title":"\u3010\u9ad8\u6821\u6570\u5b66\u306e\u30c4\u30dc\u3011 \u3068\u3042\u308b2\u6b21\u5f0f\u306e\u6700\u5927\u5024\u3002","author_name":"Iek","url":"https://iek.hatenablog.com/entry/2019/03/12/000506","width":"100%","description":"\u9ad8\u6821\u6570\u5b66\u3067\u306f\u305d\u308c\u3068\u306a\u304f2\u5909\u6570\u95a2\u6570\u306e\u6700\u5927\u6700\u5c0f\u554f\u984c\u304c\u6271\u308f\u308c\u308b\u3002\u4f8b\u3048\u3070\u5927\u5b66\u5165\u8a66\u554f\u984c\u3067\u6b21\u306e\u3088\u3046\u306a\u554f\u984c\u3092\u898b\u304b\u3051\u308b\u3002 \u3010\u554f\u984c\u3011 x2+y2=1 \u3092\u6e80\u305f\u3059\u5b9f\u6570 x, y \u306b\u3064\u3044\u3066\uff0c f(x,y)=15x2+10xy-9y2 \u306e\u6700\u5927\u5024\u3092\u6c42\u3081\u3088\u3002 \u3010\u6307\u91dd\u3011 \u70b9 (x,y) \u306f xy \u5e73\u9762\u4e0a\u306e\u539f\u70b9\u3092\u4e2d\u5fc3\u3068\u3059\u308b\u5358\u4f4d\u5186\u5468\u4e0a\u306b\u3042\u308b\u306e\u3067\uff0cx=cos\u03b8, y=sin\u03b8 \u3068\u304a\u3044\u3066\u4e09\u89d2\u95a2\u6570\u3092\u5229\u7528\u3059\u308b\u3068\u3044\u3046\u306e\u304c\uff0c\u3053\u306e\u624b\u306e\u554f\u984c\u306b\u5bfe\u3059\u308b\u6a19\u6e96\u7684\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\u3068\u8a00\u3048\u3088\u3046\u3002\u6700\u5927\u6700\u5c0f\u3092\u8003\u3048\u308b\u76ee\u7684\u95a2\u6570\u304c x \u3068 y \u306e1\u6b21\u5f0f\u3067\u3042\u308b\u3068\u304d\u306f\u56f3\u5f62\u7684\u306a\u89e3\u6cd5\u304c\u6a19\u6e96\u7684\u3067\u3042\u308d\u3046\u304c\uff0c\u3053\u306e\u3088\u3046\u306b\u4e09\u89d2\u95a2\u6570\u3092\u6301\u3061\u51fa\u3059\u89e3\u6cd5\u3082\u6709\u52b9\u3067\u3042\u308b\u3002 \u306a\u304a\uff0c\u73fe\u884c\u306e\u5b66\u7fd2\u6307\u5c0e\u8981\u9818\u3067\u306f\u9ad8\u2026","version":"1.0","provider_url":"https://hatena.blog","height":"190","provider_name":"Hatena Blog","type":"rich","blog_url":"https://iek.hatenablog.com/"}