00:01
So in this question we are asked to draw and complete the truth tables for the following expression.
00:09
And for the first expression we have p or not b, and then for the second expression we have not p and not q.
00:22
Okay, so let's do this expression first.
00:36
Okay, so we can draw the truth table like this.
00:43
We have p and then we have not b.
00:46
So let's say we have 0 and 1 and not p is just basically the negation of b, which is just negation of 0 is 0.
00:58
And then we can just or this too, just be or not p.
01:04
So 0 or 1 is 1 is 1.
01:07
So that's it.
01:08
This is the truth table for p or not p.
01:12
And then for the second question we have not p and not u.
01:16
So we can draw our trip table like this first we have p we have q and then we have not p and then we have not q the negation of q and then we have not p and not qu so let's say we have 0 0 -0 -0 -011 so not p is just an indication of b which is just 1 -1 -0 and not q is just negation of q which is 1 -1 -0 and not q is just negation of q which is 1 -0 1 .0 .0.
01:50
Okay, so not p and q, we can use this column here.
01:55
So not p is just 1100, not q is 1 .01010.
02:00
So 1 and 1 is 1, 1 and 0 is 0, 0 and 1 is 0.
02:07
So that's it.
02:08
This is the true table...