Boolean help

Discussion in 'Homework Help' started by boab, May 9, 2009.

  1. boab

    Thread Starter New Member

    May 9, 2009
    2
    0
    Hi,

    I'm hoping someone can help one way or another with this. I've an exam next week which has some Boolean in it. I've got some past papers with answers from the tutor but his answers don't agree with mine.

    They involve simplifying the following:
    =_= _ _ _
    i X = A+B.C Tutor has (A+B)+C I get A.B.C
    __= ___ _ _ _
    ii Y = A.B + B.C.A Tutor says A+C I get A + B
    _ _ _ _ _ _ _ _ _ _
    iii Z = A + A.B.C + A.B.C + A.B.C T = B + A.C I get A + B

    If I'm wrong can someone explain why as I can't see it?

    Thanks in advance
     
  2. boab

    Thread Starter New Member

    May 9, 2009
    2
    0
    Can anyone tell me how to stop all the _ and = going to the left. Not much help otherwise!
     
  3. studiot

    AAC Fanatic!

    Nov 9, 2007
    5,005
    513
    It's easier to use the A' format to indicate negation, rather than the bar.
     
  4. Ratch

    New Member

    Mar 20, 2007
    1,068
    3
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