Given the following ::= | {+ } | {with { } } | | { } (define-type F1WAE [num (n number?)] [add (Lhs F1WAE?) (rhs F1WAE?)] [with (name symbol?) (named-expr F1WAE?) (body F1WAE?)] [id (name symbol?)] [app (fun-name symbol?) (arg F1WAE?)]) Write a function that triples a number

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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Question

Write a function that triples a number

Given the following
<F1WAE> ::= <num>
| {+ <F1WAE> <F1WAE>}
| {with {<id> <F1WAE>} <F1WAE>}
| <id>
| {<id> <F1WAE>}
|(define-type F1WAE
[num (n number?)]
[add (Lhs F1WAE?) (rhs F1WAE?)]
[with (name symbol?) (named-expr F1WAE?) (body F1WAE?)]
[id (name symbol?)]
[app (fun-name symbol?) (arg F1WAE?)])
Write a function that triples a number
Transcribed Image Text:Given the following <F1WAE> ::= <num> | {+ <F1WAE> <F1WAE>} | {with {<id> <F1WAE>} <F1WAE>} | <id> | {<id> <F1WAE>} |(define-type F1WAE [num (n number?)] [add (Lhs F1WAE?) (rhs F1WAE?)] [with (name symbol?) (named-expr F1WAE?) (body F1WAE?)] [id (name symbol?)] [app (fun-name symbol?) (arg F1WAE?)]) Write a function that triples a number
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