winebarrel https://blog.hatena.ne.jp/winebarrel/ so what https://so-wh.at/ SICP 僕の解答 あんまり大きい/小さい数だと、2乗したときに精度外の値になるから…かな？ あたらしいsqrtはこんな感じ。 (define (average x y) (/ (+ x y) 2)) (define (improve guess x) (average guess (/ x guess))) (define (good-enough? pre-guess guess) (< (abs (- pre-guess guess)) 0.001)) (define (sqrt-iter pre-guess guess x) (if (good-enough? pre-guess guess) … 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fso-wh.at%2Fentry%2F20070317%2Fp5" title=" 問題1.7 - so what" 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 2007-03-17 00:00:02 rich https://so-wh.at/entry/20070317/p5 1.0 100%