(define stack-copies-of
(lambda (n image)
(if (= n 1)
image
(stack (stack-copies-of (- n 1) image)
image))))
(define power
(lambda (b e)
(if (= e 1)
b
(* (power b (- e 1))
b))))
These procedures are structurally similar.
They differ in the parameter names and the procedures called.