Drexel dragonThe Math ForumDonate to the Math Forum



Search All of the Math Forum:

Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.


Math Forum » Discussions » Math Topics » discretemath

Topic: Disc.Math homework problem
Replies: 3   Last Post: Jan 23, 2013 4:51 PM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
J Cadman

Posts: 3
From: England, UK
Registered: 12/17/12
Re: Disc.Math homework problem
Posted: Dec 17, 2012 9:26 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

Use De Morgan's law to separate out all the 'ands', then

AD' + A'B' + B'D' = A'+D + A+B + B+D, notice that D+D=D and B+B=B, so the above becomes

A'+D + A+B which can be written as
(A'+D) + (A+B),
now use De Morgan on each bracket to obtain AD' + A'B'



Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© Drexel University 1994-2014. All Rights Reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.