{"type":"rich","version":"1.0","provider_name":"Hatena Blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fgunsyu3.hatenadiary.jp%2Fentry%2F20080510%2F1210433030\" title=\"\u52c9\u5f37\u30ce\u30fc\u30c8 - SICP(2) - \u7fa4\u8846\u4e09\u4e16\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_name":"gunsyu3","categories":["SICP"],"blog_title":"\u7fa4\u8846\u4e09\u4e16","provider_url":"https://hatena.blog","image_url":null,"blog_url":"https://gunsyu3.hatenadiary.jp/","published":"2008-05-10 00:23:50","height":"190","description":"\u554f\u984c1.8\u3092\u89e3\u3044\u305f\u3088\u30fc\u3002\u3064\u3044\u30ab\u30c3\u3068\u306a\u3063\u3066\u3081\u3061\u3083\u30a4\u30b1\u898b\u306a\u304c\u3089\u3002 ;; ;; square ;; \u5e73\u65b9\u6570\u3092\u6c42\u3081\u308b ;; (define (square x) (* x x)) ;; ;; cubic ;; \u7acb\u65b9\u6570\u3092\u6c42\u3081\u308b ;; (define (cubic x) (* x x x)) ;; ;; improve ;; \u30cb\u30e5\u30fc\u30c8\u30f3\u6cd5\u3092\u4f7f\u3063\u3066\u3001\u3088\u308a\u826f\u3044\u7acb\u65b9\u6839\u306e\u8fd1\u4f3c\u89e3\u3092\u6c42\u3081\u308b ;; (define (improve guess x) (/ (+ (/ x (square guess)) (* 2 guess)) 3)) ;; ;; good-enough? ;; \u89e3\u3068\u3057\u3066\u9069\u5f53\u304b\u5224\u5b9a\u3059\u308b ;; (defi\u2026","title":"\u52c9\u5f37\u30ce\u30fc\u30c8 - SICP(2)","author_url":"https://blog.hatena.ne.jp/gunsyu3/","width":"100%","url":"https://gunsyu3.hatenadiary.jp/entry/20080510/1210433030"}