Practice Complement (lˉ) (2.6.5) - Deterministic Finite Automata (DFA) and Regular Languages
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Complement (Lˉ)

Practice - Complement (Lˉ)

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is the complement of the language L = {0, 1, 00}?

💡 Hint: Think about what strings are not included.

Question 2 Easy

True or False: The complement of a regular language is always regular.

💡 Hint: Consider the closure properties.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

Which of the following statements is true regarding the complement of a regular language?

It is always empty.
It is always regular.
It has no relation to regular languages.

💡 Hint: Recall the closure properties of regular languages.

Question 2

True or False: The DFA for the complement of a language accepts the same strings as the original DFA.

True
False

💡 Hint: Consider how state roles change.

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Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Construct the DFA for L = {a^n b^n | n≥0} and then derive its complement's DFA. Explain your steps.

💡 Hint: Pay attention to how the accepted patterns shift with the complement.

Challenge 2 Hard

Using the Pumping Lemma, demonstrate why the language L = {a^n b^m | n ≠ m} is not regular and relate this to its complement.

💡 Hint: Consider scenarios in which n and m are manipulated by the Pumping Lemma.

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Reference links

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