Ugh. I hate truth tables. But they're pretty easy..... they all start out like this:
.r|s.
t t
t f
f t
f f
you'll always start them out like that because you need to match up all the possible combinations of true and false - so get used to that order of t and f for the first two rows.
brb i need to see if there's an easier way to show you a table...
