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.

Here input is ={a,b} 1. r= a*b* Regular expression for language r= a*b* Language description: Any…

Answered: Let E= {a, b}. Given regular…

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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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.

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