De Morgan's theorem

Discussion in 'Feedback and Suggestions' started by kiroma, Apr 30, 2014.

  1. kiroma

    Thread Starter Member

    Apr 30, 2014
    40
    0
    Hello, this is my first post.
    Sorry if I did any mistake.

    In this page http://www.allaboutcircuits.com/vol_4/chpt_8/3.html
    It says "Show that (A'+B') = AB"
    It's not true. And after the image that it follows, the text explains, so I could figure out if the quote was supposed to be (A'+B')=(AB)' or (A'+B')'=(AB) and it's the second option.

    I hope I've helped.
     
  2. Wendy

    Moderator

    Mar 24, 2008
    20,765
    2,536
    You did good. Is this the section you are having problem with?

    It is quite late for me and I'm too tired to get into it deeply. If this is the problem area let us know.
     
  3. tshuck

    Well-Known Member

    Oct 18, 2012
    3,531
    675
    It looks like an error.

    From the following paragraph, it seems it should be
    as this is what is proven in the graphics and textual explanation following.
     
    kiroma likes this.
  4. kiroma

    Thread Starter Member

    Apr 30, 2014
    40
    0
    Yeah, this is the section. :)
    *feeling good about having been able to help* :D

    I don't know if you want a hand with the fix...
    I could help. :)
     
  5. Georacer

    Moderator

    Nov 25, 2009
    5,142
    1,266
    I agree that this is the best fix. No point in re-drawing the graphic.
     
  6. Dcrunkilton

    E-book Co-ordinator

    Jul 31, 2004
    416
    11
    Thanks kiroma and all for figuring this one out.

    I have entered the proposed change at ibiblio.org

    Dennis Crunkilton
     
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