From: Ramakrishnan Muthukrishnan Date: Mon, 14 Jun 2010 10:42:24 +0000 (+0530) Subject: solution to 2.15. X-Git-Url: https://git.rkrishnan.org/pf/statistics?a=commitdiff_plain;h=08a3aa8fadf49910c525d42da9e566bbeb75fae7;p=sicp.git solution to 2.15. --- diff --git a/src/sicp/ex2_15.clj b/src/sicp/ex2_15.clj index 7072794..3ccf240 100644 --- a/src/sicp/ex2_15.clj +++ b/src/sicp/ex2_15.clj @@ -2,8 +2,8 @@ (:use [sicp utils ch2_1_extended ex2_7 ex2_8 ex2_12] [clojure.test])) -(def r1 (make-center-percent 1000 0.01)) -(def r2 (make-center-percent 100 0.01)) +(def r1 (make-center-percent 1000 1)) +(def r2 (make-center-percent 100 5)) (def r3 (sub-interval (add-interval r1 r2) r2)) ;;=> (999.8799999999999 1000.1200000000001) @@ -27,6 +27,5 @@ Now r1+r2-r2 = c1 + c2 - c1 +/- (2*w1+w2) i.e. we have a new percentage width as the errors add up. The inference from this is that, we reduce the number of ranges in a calculation to -get a more accurate range. So, yes, Eva Lu Ator is right. -" - ) \ No newline at end of file +get a more accurate range. So, yes, Eva Lu Ator is right." +) \ No newline at end of file