USING TRUTH TABLES TO SEE IF AN ARGUMENT IS VALID



SENTENTIAL LOGIC

USING TRUTH TABLES TO SEE IF AN ARGUMENT IS VALID

1. Make truth table of premises and conclusion.

2. Read the truth table (all true premises and false conclusion?)

P P Q P P ( Q Q

P ( Q T T

Q T F

F T

F F

P ( Q P Q P ( Q ~P Q

~P T T

Q T F

F T

F F

P V Q P Q R ~Q P V Q R & ~Q P

R & ~Q T T T

P T T F

T F T

T F F

F T T

F T F

F F T

F F F

Q v ~S P Q S ~S Q v ~S Q ( P S ( P

Q ( P T

S ( P T

T

T

F

F

F

F

T v P P S T ~T T v P P ( S ~T ( S

P ( S T

~T ( S T

T

T

F

F

F

F

~P v S P S T ~P ~S ~T ~PvS ~T(~S P(T

~T ( ~S T T

P ( T T T

T F

T F

F

F

F

F

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