It would be a great help if someone could please tell this question:
Write a function sqr-list that consumes a list of numbers and produces a list of the squares of those numbers, computed using the built-in sqr function. Write the function by refining the template provided below.
(define (sqr-list lon)
(cond
[(empty? lon) …]
[else (... (first lon) ...
... (sqr-list (rest lon)) ...)]))