### fixed point to find root of a²＋a³＝392 but report OverflowError

I tried to find the root of a²＋a³＝392 with fixed_point introduced by SICP 1.1.3 functions as general method #+BEGIN_SRC scheme :session sicp (define tolerance 0.00001) (define (fixed-point f first-guess) (define (close-enough? v1 v2) (< (abs (- v1 v2)) tolerance)) (define (try guess) (let ((next (f guess))) (if (close-enough? guess next) next (try next)))) (try first-guess))…

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