# Homework Help: Simple Boolean Algebra / Propositional Logic Question

1. Aug 23, 2011

### sunmaz94

1. The problem statement, all variables and given/known data

Produce the given truth table (given below as well as in a neater version in the attached Excel document) using the Boolean operators AND, OR, and/or NOT:

A (Input 1) B (Input 2) O (Output)
1 1 0
1 0 0
0 1 1
0 0 0

2. Relevant equations

None; since AND, OR, and NOT are presumed knowledge.

3. The attempt at a solution

I tried taking the AND and OR of it and then taking the XOR (A AND (NOT B) OR ((NOT A) AND B)) of those results but that led me nowhere. I honestly have no idea how to proceed. Any help would be greatly appreciated. Feel free to express the solution (or parts thereof) in the conventional notation of logical conjunctions/disjunctions ($\wedge$ / $\vee$) and negations ($\neg$), if you prefer. Thanks!

P.S.

I am not using this for homework or coursework. It is actually for a circuit I'm building in the computer game Minecraft! So feel free to just give me a fully worked solution.
1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

#### Attached Files:

• ###### Book1.xls
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13.5 KB
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2. Aug 23, 2011

### Dick

Probably best if you figure it out yourself, even if it's not a homework. This is after all the homework section. (A AND B) has one true outcome just like your example but it's in the wrong place. So that's a good place to start. Try putting a 'NOT' on the A or B.

3. Aug 23, 2011

### sunmaz94

I just figured it out. I was overcomplicated things unnecessarily. I see now that the answer is: $\neg$A $\wedge$ B.

While I do thank you for your help, I would like to point out that the fact that: "This is after all the homework section", does not in any way preclude your ability to do it for me. That being said, I do agree with your general desire for the OP to figure things out themselves, with as minimal aid as possible.

4. Aug 23, 2011

### sunmaz94

This thread is now solved. It can be locked. Thanks.

5. Aug 23, 2011

### Dick

Being in the homework section does preclude just giving an answer. At least in my mind. But you did just fine on your own. Good work.