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9 months ago
  1. \item \self Consider the propositional formula $\phi = (\lnot(\lnot a
  2. \land b) \land \lnot c)$. Fill out the truth table for $\phi$
  3. and its subformulas. Compute a CNF as well as a DNF for $\phi$ from
  4. the truth table.
  5. \begin{tabular}{|c|c|c||c|c|c|c||c|}
  6. \hline
  7. $a$&$b$&$c$&$\lnot a$&$\lnot a \land b$&$\lnot(\lnot a \land b)$&$\lnot c$&$\phi = (\lnot(\lnot a \land b) \land \lnot c)$\\
  8. \hline
  9. \hline
  10. \textbf{F} &\textbf{F} &\textbf{F} & & & & &\\
  11. \hline
  12. \textbf{F} &\textbf{F} &\textbf{T} & & & & &\\
  13. \hline
  14. \textbf{F} &\textbf{T} &\textbf{F} & & & & &\\
  15. \hline
  16. \textbf{F} &\textbf{T} &\textbf{T} & & & & &\\
  17. \hline
  18. \textbf{T} &\textbf{F} &\textbf{F} & & & & &\\
  19. \hline
  20. \textbf{T} &\textbf{F} &\textbf{T} & & & & &\\
  21. \hline
  22. \textbf{T} &\textbf{T} &\textbf{F} & & & & &\\
  23. \hline
  24. \textbf{T} &\textbf{T} &\textbf{T} & & & & &\\
  25. \hline
  26. \end{tabular}