00:01
Okay, we have here two statements, m and n, that means a four -line truth table.
00:07
There are four possible situations.
00:10
Both true, one true, one false, false true, and both false.
00:17
And the order is always, as shown here, t, f, f, t, f, f.
00:22
F.
00:22
F.
00:23
First column, two t's, two fs.
00:25
Next column, tf, tf.
00:27
Now, i want to work out the third column which they tell you is not n.
00:37
So not n is the reverse of n.
00:41
If n is true, not n is false.
00:44
If n is false, not n is true.
00:48
So just reverse the letters in column n, and that's not n.
00:54
Then what i do, i want to work out m and n.
01:00
Which means join this column with this column using the and connected...