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Math Help - Simple Boolean Algebra Expression

  1. #1
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    Joined
    Jan 2009
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    1

    Simple Boolean Algebra Expression

    found myself confronted with an interesting problem that i was not 100% sure on,
    is:
    x1 and (not)x2 or x3
    a Boolean expression? (notice the lack of parenthesis around x1 and x2 or x2 and x3)


    i believe not since there are "no parenthesis" around one of the expressions.
    (im not asking how to solve it or anything, just if its valid, at first i thought it was so i continued on to solve it using proofs but then i realized the lack of parentheses created a problem.
    thanks.
    -Vindicated
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  2. #2
    Newbie
    Joined
    Oct 2008
    From
    Montreal, Canada
    Posts
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    I think it is legal. I remember asking my professor the same question, and the answer was that it is legal, you just solve it from left to right one operation at a time.
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