Created
December 25, 2011 01:49
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Square root in scheme
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| (define (sqrt x) | |
| (define (average lhs rhs) | |
| (/ (+ lhs rhs) 2)) | |
| (define (good-enough? guess) | |
| (< (abs (- (square guess) x)) .0001)) | |
| (define (improve guess) | |
| (average guess (/ x guess))) | |
| (define (try guess) | |
| (if (good-enough? guess) | |
| guess | |
| (try (improve guess)))) | |
| (try 1)) |
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