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Math Help - How do you get the output expression for this?

  1. #1
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    How do you get the output expression for this?

    How do you get the output expression for this?-lbdq3.png
    The answer is apparently

    ______________________
    ( A+ D+ABCD)(B+C)

    I'm not really sure how to get there esp.since that answer apparently looks like a composite function.
    Last edited by xods; October 8th 2012 at 10:27 PM.
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  2. #2
    MHF Contributor
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    Re: How do you get the output expression for this?

    Hey xods.

    Try and expand the output of the gate: remember to apply each operation in the order its given and surround that answer with brackets that feed into the next operation. Once you have the final expression, then expand all the brackets and simplify to check if it is equal to the other answer.
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