You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
sicp-all-tasks/sicp/3_002e54

23 lines
414 B

Exercise 3.54: Define a procedure
mul-streams, analogous to add-streams, that produces the
elementwise product of its two input streams. Use this together with the
stream of integers to complete the following definition of the stream
whose
n
th
element (counting from 0) is
n
+
1
factorial:
(define factorials
(cons-stream 1 (mul-streams ⟨??⟩ ⟨??⟩)))