SICM Exercise 1.31.
(define (ex1.31 F) (define (ex1.31-bar q-prime) (define q (compose F (Gamma q-prime))) (ref (Gamma q) 2)) (Gamma-bar ex1.31-bar))
(define (ex1.31 F) (define (ex1.31-bar q-prime) (define q (compose F (Gamma q-prime))) (ref (Gamma q) 2)) (Gamma-bar ex1.31-bar))