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Math Help - hhhellllpp????????

  1. #1
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    hhhellllpp????????

    Show that AuB=Bua for any sets A and B.......
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  2. #2
    Senior Member OReilly's Avatar
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    Quote Originally Posted by kodirl
    Show that AuB=Bua for any sets A and B.......
    I have told you what you can use to prove that in similar your question.

    Use Logic rules.
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  3. #3
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    Quote Originally Posted by kodirl
    Show that AuB=Bua for any sets A and B.......
    I recommend to show that,
    (A\cup B)\subseteq (B\cup A)
    (B\cup A)\subseteq (A\cup B)
    Then,
    A=B
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