1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Is this correct anyone?

  1. Oct 28, 2005 #1
    Can anyone just check if I got it right please?
    And if so could you just explain the theorems that come with each line? Many many thanks in advance

    (A-B) n (B-A) = (AuB’) n (BuA’)
    = (Au(BuA’)) u(B’n (BuA’))
    = ((AnB) u (AnA’)) u ((B’nB) u (B’nA’))
    = (AnB) u Ø u Ø u (B’nA’)
    = (AnB) u (B’nA’)
    = (AnB) u (BuA)’
    = (AnB) - (BuA)
    = (AnB) - (AuB)
  2. jcsd
  3. Oct 28, 2005 #2


    User Avatar
    Science Advisor
    Homework Helper

    If A = {1,2,3,4} and B = {3,4,5,6}, what is A-B? What is B-A? What is their intersection?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook