Let E= {a, b}. Given regular expressions r = a*b*, r' = ba(ab)* + ab*ba and p" = (a + b)aa(a + b)*, find L(r), L(r'), and L(r"), the languages defined by r, r', r", respectively.

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
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Let \( \Sigma = \{a, b\} \). Given regular expressions \( r = a^*b^* \), \( r' = ba(ab)^* + ab^*ba^* \), and \( r'' = (a + b)aa(a + b)^* \), find \( L(r) \), \( L(r') \), and \( L(r'') \), the languages defined by \( r \), \( r' \), and \( r'' \), respectively.
Transcribed Image Text:Let \( \Sigma = \{a, b\} \). Given regular expressions \( r = a^*b^* \), \( r' = ba(ab)^* + ab^*ba^* \), and \( r'' = (a + b)aa(a + b)^* \), find \( L(r) \), \( L(r') \), and \( L(r'') \), the languages defined by \( r \), \( r' \), and \( r'' \), respectively.
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