aparler/RosettaCodeData
1
0
Fork 0
Code Issues 12 Pull requests 3 Projects Releases Packages Wiki Activity Actions

tasks a-s

Browse source
This commit is contained in:
Ingy döt Net 2013-04-10 23:57:08 -07:00
parent 47bf37c096
commit b83f433714
12433 changed files with 156208 additions and 123 deletions
Download patch file Download diff file Expand all files Collapse all files

18
Task/Nth-root/Scheme/nth-root.ss Normal file
View file

@ -0,0 +1,18 @@
(define (root number degree tolerance)
(define (good-enough? next guess)
(< (abs (- next guess)) tolerance))
(define (improve guess)
(/ (+ (* (- degree 1) guess) (/ number (expt guess (- degree 1)))) degree))
(define (*root guess)
(let ((next (improve guess)))
(if (good-enough? next guess)
guess
(*root next))))
(*root 1.0))
(display (root (expt 2 10) 10 0.1))
(newline)
(display (root (expt 2 10) 10 0.01))
(newline)
(display (root (expt 2 10) 10 0.001))
(newline)