# Can I apply Consensus Theorem here?

Discussion in 'Homework Help' started by ENG99, Feb 24, 2014.

1. ### ENG99 Thread Starter Member

Feb 13, 2014
37
0
Hi guys,
Could someone tell me if I can apply consensus theorem in this expression to reduce it

A+B+A'B'C'D

the result i got is A+B but I'm not sure

2. ### WBahn Moderator

Mar 31, 2012
20,076
5,666
Well, just see if you can find one input combination that is (or is not) covered by your result that is not (or is) covered by the original expression.

If the output is determined by the A'B'C'D term, what do you know about the A and B terms? With that in mind, is A'B'C'D covered by (A+B) or not?

3. ### ENG99 Thread Starter Member

Feb 13, 2014
37
0
The original expression is A+B+A'B'C'D and I could not find any theorem to apply! Except consensus theorem. Is it ok if I use it or not?

4. ### WBahn Moderator

Mar 31, 2012
20,076
5,666
Well... try. But show your work!

Also, do what I asked and check your answer to see if it is consistent with the original problem.