{"description":"\u3080\u3080\u30fb\u30fb\u30fb\u3002\u5168\u7136\u308f\u304b\u3089\u3093\u306e\u3067\u3001\u7d20\u4eba\u304f\u3055\u3044SICP\u300c\u72ec\u300d\u66f8\u4f1a\u306e\u89e3\u7b54\u3092\u898b\u305f\u3002 SICP memo: \u554f\u984c2.9 \u7d20\u6674\u3089\u3057\u3044\u3002 \u8981\u3059\u308b\u306b\u3001\u300c\u5e45(\u533a\u9593a) + \u5e45(\u533a\u9593b)\u300d\u3068\u3001\u300c\u5e45(\u533a\u9593a + \u533a\u9593a)\u300d\u304c\u4e00\u7dd2\u304b\u3069\u3046\u304b\u3063\u3066\u4e8b\u304b\u3002 \u50d5\u306f\u5177\u4f53\u4f8b\u3092\u793a\u3057\u3066\u307f\u308b\u3002\u307e\u305a\u306f\u3001\u5e45\u306e\u5b9a\u7fa9\u3059\u308b\u3002\u5e45 = (\u4e0a\u9650+\u4e0b\u9650)/2\u306a\u306e\u3067\u3001 (define (width-interval x) (/ (+ (upper-bound x) (lower-bound x)) 2)) \u4f8b\u3092\u793a\u3059\u305f\u3081\u306b\u3001\u533a\u9593a,b\u3092\u5b9a\u7fa9\u3059\u308b\u3002\u533a\u9593a = 1..3\u3001\u533a\u9593b = 4..6\u3068\u3057\u305f\u3068\u304d\u3001\u5e45(a)\u306f2, \u5e45(b)\u306f5\u3068\u306a\u308b\u3002 (define a (m\u2026","height":"190","type":"rich","author_name":"tanakaBox","author_url":"https://blog.hatena.ne.jp/tanakaBox/","published":"2007-08-01 06:42:22","categories":["Scheme"],"title":" SICP\u3092\u8aad\u3080(41) \u554f\u984c 2.9 \u533a\u9593\u306e\u5e45","blog_url":"https://boxnos.hatenablog.com/","url":"https://boxnos.hatenablog.com/entry/20070801/1185918142","image_url":null,"blog_title":"\u30dc\u30af\u30ce\u30b9","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fboxnos.hatenablog.com%2Fentry%2F20070801%2F1185918142\" title=\" SICP\u3092\u8aad\u3080(41) \u554f\u984c 2.9 \u533a\u9593\u306e\u5e45 - \u30dc\u30af\u30ce\u30b9\" 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","provider_name":"Hatena Blog","version":"1.0","width":"100%"}