Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

Pages: **1**

**stormswimmer****Member**- Registered: 2006-01-27
- Posts: 8

Can anyone help me with Boolean Algebra

((A+B)B')+AB

Does anyone understand this

or this

Find all ordered pairs (A, B) that satisfy the following expression: (A + B)' ((AB)')

Offline

**Ricky****Moderator**- Registered: 2005-12-04
- Posts: 3,791

I've always hated boolean algebra, but only because I can never remeber whether plus or multiplication is and or or.

((A+B)B')+AB

((A v B) ^ ~B) v (A ^ B)

The easiest way to do this is to make a truth table:

A | B

------

0 | 0

0 | 1

1 | 0

1 | 1

Then plug each of the values in. For the first ordered pair (0,0), it would be:

((0+0)0') + 0*0 which is (0*1) + (0) which is 0.

Try the others, post your results here and we can check them for you.

"In the real world, this would be a problem. But in mathematics, we can just define a place where this problem doesn't exist. So we'll go ahead and do that now..."

Offline

**ikirs****Member**- Registered: 2006-05-18
- Posts: 1

Can anyone help me to find some text about any matter (or topic) of mathematics. Because I have to write an essay and it should be about 2 pages long so that I could use it.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 24,651

ikirs,

Your seeking help on any topic in mathematics leaves a lot of options open. You haven't specified at what level of school/university you are.

However, I shall give some links on some interesting topics in mathematics, you may choose from these.

De Moivre's Theorem :- Use the hyperlinks given.

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

Pages: **1**