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Question

Consider the following two finite automata $D_1$ and $D_2$.



Which of the following statements is/are true?

To determine which statements are true about the finite automata \(D_1\) and \(D_2\), we first need to analyze the languages accepted by each automaton.

Step 1: Analyze \(D_1\) and \(D_2\)

Finite automata \(D_1\) and \(D_2\) are defined over the alphabet \(\{0, 1\}\). Each automaton transitions based on input characters. The task is to evaluate the operations and find out about:

  1. The equivalence of languages: \(L(D_1) = L(D_2)\)
  2. Subset relation: \(L(D_1) \subset L(D_2)\)
  3. Intersection: \(L(D_1) \cap L(D_2) = \{\epsilon\}\)
  4. Closure property: \((L(D_1) \cup L(D_2))^*\) resulting in strings whose length is divisible by 3

Step 2: Determine \(L(D_1)\) and \(L(D_2)\)

Without explicit transition details, determining the exact languages requires observation or given transition rules. Normally, this involves enumerating or deducing from patterns what each automaton accepts.

Step 3: Evaluate Statements

  • \(L(D_1) = L(D_2)\): This would imply both automata accept exactly the same set of strings. The provided solution does not confirm this.
  • \(L(D_1) \subset L(D_2)\): This would suggest that all strings accepted by \(D_1\) are also accepted by \(D_2\) but not vice versa. This is unconfirmed without specific analysis.
  • \(L(D_1) \cap L(D_2) = \{\epsilon\}\): This states only the empty string \(\epsilon\) is in both languages, meaning they share no other common strings. This is marked as correct in the information given.
  • \((L(D_1) \cup L(D_2))^*\) consists of all strings whose length is divisible by 3: This claims that the repeated union (closure) of both languages leads to strings with lengths divisible by 3. This also is marked as correct.

Conclusion:

  • The correct statements are: \(L(D_1) \cap L(D_2) = \{\epsilon\}\) and \((L(D_1) \cup L(D_2))^*\) consists of all strings whose length is divisible by 3.
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Important Questions from Finite Automata

  1. If NFA of 5 states excluding the initial state is converted into DFA, maximum possible number of states for the DFA is?

  2. A Language for which DFA exist is a________

  3. For a DFA accepting binary numbers whose decimal equivalent is divisible by 3, what are all the possible remainders?

  4. Minimum Number of states require to accept string ends with 101.

  5. Consider the DFA given below

    Which of the regular expressions given below represents the above DFA ?

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