tanakaBox https://blog.hatena.ne.jp/tanakaBox/ ボクノス https://boxnos.hatenablog.com/ Scheme 微分を一気に乗り切るぞぉ〜。 問題 2.57 いやぁ、大失敗。失敗例。 (define (make-sum-iter ex2) (fold-right (lambda (ex l) (cond ((=number? ex 0) l) ((and (number? ex) (pair? l) (number? (car l))) (cons (+ ex (car l)) (cdr l))) (else (cons ex l)))) '() ex2)) (define (make-sum ex1 ex2) (define l (make-sum-iter (cons ex1 ex2))) (con… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fboxnos.hatenablog.com%2Fentry%2F20071212%2F1197441060" title=" SICPを読む(70) 問題 2.57-2.58 記号微分(2) - ボクノス" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2007-12-12 15:31:00 rich https://boxnos.hatenablog.com/entry/20071212/1197441060 1.0 100%