[plt-scheme] essentials of programming languages second edition

Hi everybody,
I want to know if any one of you has the solution for the exercise 5.17 page 
200 & execises 7.38 &7.39 page 288 in the book essentials of programming 
languages second edition.

if you do have it please e-mail it to me:           
jonathan_david2003 at hotmail.com
thanks
DJ

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