{"height":"190","width":"100%","version":"1.0","image_url":null,"blog_title":"\u6570\u5b66\u5927\u597d\u304d\u5ba3\u8a00\uff01","author_url":"https://blog.hatena.ne.jp/mochi-mochi61/","blog_url":"https://mochi-mochi61.hatenablog.com/","type":"rich","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmochi-mochi61.hatenablog.com%2Fentry%2F2021%2F03%2F09%2F203038\" title=\"(3/9~)\u30e1\u30e2 - \u6570\u5b66\u5927\u597d\u304d\u5ba3\u8a00\uff01\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_url":"https://hatena.blog","description":"\u30fb\u7b97\u8853\u5e7e\u4f55\u5e73\u5747\u3092\u4f7f\u3063\u305f\u5186\u5468\u7387\u306e\u8fd1\u4f3c\uff1aa_0=1, b_0=1/\u221a2, S_0=1/4, a_{n+1}=(a_n+b_n)/2, b_{n+1}=\u221a(a_n+b_n), S_{n+1}=S_n+2^n(a_{n+1}^2+b_{n+1}^2)\u3068\u304a\u304f\u3068\u3001n\u2192\u221e\u306e\u3068\u304dS_n\u2192\u03c0\u3089\u3057\u3044\u3002 \u30fb\u6f38\u5316\u5f0fa_{n+2}=Aa_{n+1}+Ba_n\u3092\u6e80\u305f\u3059\u6570\u5217a_n\u306b\u304a\u3044\u3066\u3001b_n=a_{n+1}/a_n \u3068\u304a\u304f\u3068\u3001b_{n+1}=a_{n+2}/a_{n+1}=(Aa_{n+1}+Ba_n)/a_{n+1} =A+B/b_n. b_n=a_n/a_{n+1}\u3068\u304a\u304f\u3068\u3001b_{n+1}=a_{n+1}/(Aa_\u2026","categories":["\u65e5\u8a18\u30e1\u30e2"],"title":"(3/9~)\u30e1\u30e2","published":"2021-03-09 20:30:38","author_name":"mochi-mochi61","url":"https://mochi-mochi61.hatenablog.com/entry/2021/03/09/203038","provider_name":"Hatena Blog"}