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(4) (Multiple Choice) Consider this definition of the function f: (define (f xs) (reduce + 0 (map (lambda (x) (* x x)) xs))) Which of the following alternate definitions of f is equivalent to the one above that used map and reduce? (a) (define (f xs) (cond [(null? xs) 0] [(cons? xs) (* (+ (car xs) (car xs)) (f (cdr xs)))])) (b) (define (f xs) (cond [(null? xs) 0] [(cons? xs) (+ (* (car xs) (car xs)) (f (cdr xs)))])) (c) (define (f xs) (cond [(null? xs) 0] [(cons? xs) (+ (car xs) (f (cdr xs)))])) (d) (define (f xs) (cond [(null? xs) 0] [(cons? xs) (* (car xs) (f (cdr xs)))]))

(4) (Multiple Choice) Consider this definition of the function f: (define (f xs) (reduce + 0 (map (lambda (x) (* x x)) xs))) Which of the following alternate definitions of f is equivalent to the one above that used map and reduce? (a) (define (f xs) (cond [(null? xs) 0] [(cons? xs) (* (+ (car xs) (car xs)) (f (cdr xs)))])) (b) (define (f xs) (cond [(null? xs) 0] [(cons? xs) (+ (* (car xs) (car xs)) (f (cdr xs)))])) (c) (define (f xs) (cond [(null? xs) 0] [(cons? xs) (+ (car xs) (f (cdr xs)))])) (d) (define (f xs) (cond [(null? xs) 0] [(cons? xs) (* (car xs) (f (cdr xs)))]))

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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(4) (Multiple Choice) Consider this definition of the function f: (define (f xs) (reduce + 0 (map (lambda (x) (* x x)) xs))) Which of the following alternate definitions of f is equivalent to the one above that used map and reduce? (a) (define (f xs) (cond [(null? xs) 0] [(cons? xs) (* (+ (car xs) (car xs)) (f (cdr xs)))])) (b) (define (f xs) (cond [(null? xs) 0] [(cons? xs) (+ (* (car xs) (car xs)) (f (cdr xs)))])) (c) (define (f xs) (cond [(null? xs) 0] [(cons? xs) (+ (car xs) (f (cdr xs)))])) (d) (define (f xs) (cond [(null? xs) 0] [(cons? xs) (* (car xs) (f (cdr xs)))]))
Transcribed Image Text:(4) (Multiple Choice) Consider this definition of the function f: (define (f xs) (reduce + 0 (map (lambda (x) (* x x)) xs))) Which of the following alternate definitions of f is equivalent to the one above that used map and reduce? (a) (define (f xs) (cond [(null? xs) 0] [(cons? xs) (* (+ (car xs) (car xs)) (f (cdr xs)))])) (b) (define (f xs) (cond [(null? xs) 0] [(cons? xs) (+ (* (car xs) (car xs)) (f (cdr xs)))])) (c) (define (f xs) (cond [(null? xs) 0] [(cons? xs) (+ (car xs) (f (cdr xs)))])) (d) (define (f xs) (cond [(null? xs) 0] [(cons? xs) (* (car xs) (f (cdr xs)))]))
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