Ad. {w w has an even number of a's and each a is followed by at least one b}

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
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Hello can you please help me with part A I only

need help is with part A because I don't understand how to do this. 
can you please write something visual to help me understand.

only need help with part A

1.4 Each of the following languages is the intersection of two simpler languages. In
each part, construct DFAs for the simpler languages, then combine them using the
construction discussed in footnote 3
to give the state diagram of a DFA
for the language given. In all parts, Σ = {a, b}.
a. {w w has at least three a's and at least two b's}
Ab. {w w has exactly two a's and at least two b's}
c. {w w has an even number of a's and one or two b's}
Ad. {w w has an even number of a's and each a is followed by at least one b}
e. {w w starts with an a and has at most one b}
f. {w w has an odd number of a's and ends with a b}
g. {w w has even length and an odd number of a's}
Transcribed Image Text:1.4 Each of the following languages is the intersection of two simpler languages. In each part, construct DFAs for the simpler languages, then combine them using the construction discussed in footnote 3 to give the state diagram of a DFA for the language given. In all parts, Σ = {a, b}. a. {w w has at least three a's and at least two b's} Ab. {w w has exactly two a's and at least two b's} c. {w w has an even number of a's and one or two b's} Ad. {w w has an even number of a's and each a is followed by at least one b} e. {w w starts with an a and has at most one b} f. {w w has an odd number of a's and ends with a b} g. {w w has even length and an odd number of a's}
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