; your code goes here
(define (f1 a) (if (= a 0) 0
(/ 1 a)))
(define (f2 a) (cond((= a 0) 0)
((= a 1) 1)
(else (/ 1 a)))
)
(display (f1 5))
(newline)
(display (f1 0)) (newline)
(display (list (f2 0) (f2 1) (f2 4)) )
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