Construct a truth table for this statement q ∨ (p → ∼r)
Can any1 help me with this?
sure
do you know how to start?
What does this sign mean ∨
I'm not familiar with the proper notation
Satellite, I am not sure how to start
you need all possible combinations of T and F for the three variables p, q, r so it will have 8 rows
Okay
V= OR It means As long as one side of the variables is true then the whole thing is true
it should look like this \[\begin{array}{|c|c|c} P & Q & R \\ \hline T & T & T \\ T & T & F \\ T & F & T \\ T & F & F \\ \hline F & T & T \\ F & T & F \\ F & F & T\\ F & F & F \\ \hline \end{array}\]
now we need to add \(\lnot r\)
That is only the first part?
we make no assumptions, we just compute like donkeys \[\begin{array}{|c|c|c|c} P & Q & R & \lnot{}R \\ \hline 0 & 0 & 0 & 1 \\ 0 & 0 & 1 & 0 \\ 0 & 1 & 0 & 1 \\ 0 & 1 & 1 & 0 \\ \hline 1 & 0 & 0 & 1 \\ 1 & 0 & 1 & 0 \\ 1 & 1 & 0 & 1 \\ 1 & 1 & 1 & 0 \\ \hline \end{array}\]
oh yes, lots more to go
Alright
damn i used 0 and 1, you need T and F i will let you adjust
I am still working on table one, you can keep going
now we need \(p\to \lnot r\)
for this we look at the column \(p\) and \(\lnot r\) and the implication is only false is \(p\) is true and \(\lnot r\) is false
So O is F and 1 is T?
\[\begin{array}{|c|c|c|c|c} P & Q & R & \lnot{}R & P\Rightarrow{}\lnot{}R \\ \hline 0 & 0 & 0 & 1 & 1 \\ 0 & 0 & 1 & 0 & 1 \\ 0 & 1 & 0 & 1 & 1 \\ 0 & 1 & 1 & 0 & 1 \\ \hline 1 & 0 & 0 & 1 & 1 \\ 1 & 0 & 1 & 0 & 0 \\ 1 & 1 & 0 & 1 & 1 \\ 1 & 1 & 1 & 0 & 0 \\ \hline \end{array}\]
no, 0 are true, 1 are false
See I was right first half is True
1 is True 0 is False
Okay thanks
and finally, we need \(q\lor (p\to \lnot r)\) which, being an or statement, is true unless both are false
\[\begin{array}{|c|c|c|c|c|c} P & Q & R & \lnot{}R & P\Rightarrow{}\lnot{}R & Q\lor{}(P\Rightarrow{}\lnot{}R) \\ \hline 0 & 0 & 0 & 1 & 1 & 1 \\ 0 & 0 & 1 & 0 & 1 & 1 \\ 0 & 1 & 0 & 1 & 1 & 1 \\ 0 & 1 & 1 & 0 & 1 & 1 \\ \hline 1 & 0 & 0 & 1 & 1 & 1 \\ 1 & 0 & 1 & 0 & 0 & 0 \\ 1 & 1 & 0 & 1 & 1 & 1 \\ 1 & 1 & 1 & 0 & 0 & 1 \\ \hline \end{array}\]
Okay this will take a while for me to do, thanks
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