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Math Help - venn diagram proof...

  1. #1
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    venn diagram proof...

    Prove for all sets A,B, and C :
    A complement UNION B complement = (A intercept B) complement

    help me plz
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  2. #2
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by st4rl1ight View Post
    Prove for all sets A,B, and C :
    A complement UNION B complement = (A intercept B) complement

    help me plz
    venn diagrams do not really constitute proofs. are you required to do it that way? see here for a more general way
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  3. #3
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    yea... we need to proof it...
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  4. #4
    Member Danshader's Avatar
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    well you can use De Morgans's theorem: DeMorgan's Theorem

    or you can basically just draw out each part of A and B on a Venn diagram and observe how the shading of regions goes.
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