00:01
All right, s is the set containing the set containing a and the set containing a and b.
00:07
So first we're going to find union, union s.
00:11
So that's going to be the union of.
00:14
So if i union s, then i just union all the elements of s.
00:17
So the first element of s is the set containing a.
00:20
And the second element of s is the set containing a and b.
00:25
So the union of these two sets is the set containing anything in either set.
00:30
So that's going to be a and b.
00:32
You don't repeat elements in the set, so i only list a once.
00:37
Then this is going to be the union of all elements in the set, so that's going to be a, union b.
00:44
Okay, next one is the intersection of the intersection of s.
00:48
It's going to be the intersection of all elements in s.
00:52
So it's going to be set a, intersected to set a b.
00:56
So i want the elements that are only in both sets...