Question: please solve those questions 49. What does the following Scheme function do? (define (x lis) (cond ((null? lis) ?) ((not (list? (car lis))) (cond ((eq?

please solve those questions 49. What does the following Scheme function

please solve those questions

49. What does the following Scheme function do? (define (x lis) (cond ((null? lis) ?) ((not (list? (car lis))) (cond ((eq? (car lis) nil) (x (cdr lis))) (else (+ (x (car lis)) (x (cdr lis)))

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