Question: User If propositional logic formula phi 1 OR phi 2 is valid, which of the following statements are true? select all that apply phi 1

User
If propositional logic formula phi1 OR phi2 is valid, which of the following statements are true? select all that apply
phi1 is valid
phi2 is satisfiable
phi1 AND phi2 is satisfiable
NOT phi1 OR NOT phi2 is unsatisfiable
None of the above

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