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: Help solve the Absorption Law

  1. Sep 7, 2009 #1
    1. The problem statement, all variables and given/known data

    prove that A v (B ^ A) = A

    2. Relevant equations

    V = union
    ^ = intersection
    ' = complement

    3. The attempt at a solution

    A v (B ^ A) = (A v B) ^ (A v A) (used distributive property)


    ummm yeah im kinda lost from here. much help appreciated
     
  2. jcsd
  3. Sep 7, 2009 #2
    Try

    [tex]A \vee (A \wedge B) = (A \wedge \bold{U}) \vee (A \wedge B)[/tex]

    and work from there. (Note that U is the universe.)

    --Elucidus
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook