2. Exhibit a string over the alphabet {a,b} that does not belong to (bUab)*(a Uba)*.Justify your answer. (No formal proof is needed.)Hint: You may want to construct an NFA for this regular expression.

(bUab)*(aUba)*. 2. Exhibit a string over the alphabet {a,b} that does not belong to Justify your answer. (No formal proof is needed.) Hint: You may want to construct an NFA for this regular expression.

(bUab)(aUba). 2. Exhibit a string over the alphabet {a,b} that does not belong to Justify your answer. (No formal proof is needed.) Hint: You may want to construct an NFA for this regular expression.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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2. Exhibit a string over the alphabet {a,b} that does not belong to (bUab)*(a Uba)*.
Justify your answer. (No formal proof is needed.)
Hint: You may want to construct an NFA for this regular expression.

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