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Database System Concepts
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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The regular expression of language which starting and ending with different * :symbol is b(a+b)*a All above a(a+b)* a(a+b)*b + b(a+b)*a O * : The set of all strings over {a,b} of length 4 starting with a (ab+ba)(aa+bb) a(a+b)* a(a+b)(a+b)(a+b) a(ab)*
Transcribed Image Text:The regular expression of language which starting and ending with different * :symbol is b(a+b)*a All above a(a+b)* a(a+b)*b + b(a+b)*a O * : The set of all strings over {a,b} of length 4 starting with a (ab+ba)(aa+bb) a(a+b)* a(a+b)(a+b)(a+b) a(ab)*
*: The set of all strings from b(b+c)* are {b,ab,bc,.} {cb,bbc,bcc,} None of the above {b,bb,bc,bbb,bcc,..}
Transcribed Image Text:*: The set of all strings from b(b+c)* are {b,ab,bc,.} {cb,bbc,bcc,} None of the above {b,bb,bc,bbb,bcc,..}
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