SOLUTION: I am lost on truth tables, can you please help? Construct a truth table for ~q -->(~q ^ p)

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Question 207907: I am lost on truth tables, can you please help?

Construct a truth table for ~q -->(~q ^ p)

Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!
To construct the truth table for ~q --> (~q ^ p), let's first break it up:


First, let's make a truth table for ~q:
q~q
TF
FT


Note: just write the opposite of q for every entry


Now, let's make a table for ~q ^ p (simply use the "and" operator for columns ~q and p):

pq~q~q ^ p
TTFF
TFTT
FTFF
FFTF



Note: ~q ^ p is only true when both ~q and p are true. Otherwise, it's false.



Finally, make a table for ~q --> (~q ^ p):


pq~q~q ^ p~q --> (~q ^ p)
TTFFT
TFTTT
FTFFT
FFTFF



Recall that p -> q is only false when p is true and q is false. Otherwise, it is true.

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