{"type":"rich","url":"https://kiririmode.hatenablog.jp/entry/20071224/p2","author_url":"https://blog.hatena.ne.jp/kiririmode/","height":"190","categories":["SICP"],"image_url":null,"description":"\u8a18\u53f7\u7684\u5fae\u5206\u3092\u4e2d\u7f6e\u8a18\u6cd5\u306b\u5bfe\u3057\u3066\u884c\u3048\u308b\u3088\u3046\u306b\u5909\u66f4\u3057\u308d\u3063\u3066\u8a00\u3046\u8ab2\u984c\u3067\u3001\u5909\u66f4\u70b9\u306f\u4ee5\u4e0b\u306a\u611f\u3058\u3002 (define (make-sum a1 a2) (cond ((=number? a1 0) a2) ((=number? a2 0) a1) ((and (number? a1) (number? a2)) (+ a1 a2)) (else (list a1 '+ a2)))) (define (make-product m1 m2) (cond ((or (=number? m1 0) (=number? m2 0)) 0) ((=number? m1 1) m2) ((=number? m2 1) m\u2026","blog_title":"\u7406\u7cfb\u5b66\u751f\u65e5\u8a18","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkiririmode.hatenablog.jp%2Fentry%2F20071224%2Fp2\" title=\"\u554f\u984c2-58 (2.3.2 Example: Symbolic Differentiation) - \u7406\u7cfb\u5b66\u751f\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2007-12-24 00:00:01","version":"1.0","provider_url":"https://hatena.blog","provider_name":"Hatena Blog","blog_url":"https://kiririmode.hatenablog.jp/","author_name":"kiririmode","width":"100%","title":"\u554f\u984c2-58 (2.3.2 Example: Symbolic Differentiation)"}