what may be the good suggestions in olympiad functional equations for a beginner for . I have heard of this book by B.J.Venkatachala but do not whether it will be suitable for me or not. Anybody already having his book please reply... I really need to improve my problem solving skills in this.
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There is the functional equations training book by Andreescu and Andrica, and the functional equations book by Chris Small. Both are good, and contest-oriented. Have not seen the book mentioned in the OP.