Unions and interesections of families of sets.

In this video we give two examples of computing the union and intersections of families of sets. We follow the presentation in Dan Madden's notes for Math 323 at the University of Arizona.

[@valeriereid2337]

Thanks so very much for this excellent explanation. Your video most certainly helped.

[@casimirdebonneval8150]

Whaaaaaaaouuuuuu I have been trying to figure this out on my own for 30mn could not do it. Then after 1mn of this vid I got it Thank you so much!!

[@esraa8192]

dude really? am i stupid??? i really didnt understand this subject :((( it's so complicated and with online education it is more and more complicated. anyway i dont know why i am telling these but IM TİRED because of trying to figure out something on my own........

[@shdvvch1ld]

does notation Ex = {x,7} mean x stated as a variable value (x | x belongs to R), so we can build sets in Ex such as {1, 7}, {3, 7}, {4.5, 7}.. etc?