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Math Help - true tables urgent

  1. #1
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    true tables urgent

    show using truth tables, that the statement "if P then Q" is logically equivalent to the statement "not P or Q"
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  2. #2
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by ana1808 View Post
    show using truth tables, that the statement "if P then Q" is logically equivalent to the statement "not P or Q"
    fill out the table and observe that the truth values for both expressions are the same in each corresponding entry:

    \begin{array}{|c|c|c|c|c|} <br />
\hline  \bold{P} & \bold{Q} & \neg \bold{ P} & \bold{P} \implies \bold{Q} & \bold{\neg P \vee Q} \\<br />
\hline T & T & & & \\<br />
\hline T & F & & & \\<br />
\hline F & T & & & \\<br />
\hline F & F & & & \\<br />
 \hline \end{array}
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  3. #3
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    Same as showing  P \implies Q is equivalent to  \neg P \vee Q . Just look at the truth tables and see that they have the same values.
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