Procedure for multiplying series
With power series represented as streams of coefficients as in exercise 3.59
, adding series is implemented by
add-streams
. Complete the definition of the following procedure for multiplying series:
(define (mul-series s1 s2)
(cons-stream <??> (add-streams <??> <??>)))
You can test your procedure by verifying that
sin²x + cos²x = 1
, using the series from exercise
3.59