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Thread: Truth Tables

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  1. #1
    Join Date
    Jun 2008
    Posts
    3

    Question Truth Tables

    Hi,

    Sorry if this thread doesn't belong here... but anyways I need help understanding a truth table I was given. I think I understand it for the most part but I'm confused as to how the last statement results in a true value?

    p = T
    q = F
    p Λ q = F
    p V q = T
    ~ ( p Λ q) = T
    (p Λ q) V ~ (p V q) = T


    I worked out the last statement as follows:

    (p Λ q) = F
    (p V q) = T
    ~(p V q) = F
    (F) V F = F

    So that contradicts what the book says. Also I checked the errata for this book too and it doesn't mention this as an error. So I'm guessing I got something wrong with precedence.. any help would be greatly appreciated. Thank you!

    EDIT: I pulled the statement from this truth table:
    http://img258.imageshack.us/img258/9333/ttableme4.jpg
    Last edited by SEUNG1; June 21st, 2008 at 06:57 PM.

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