# Can some help me in these ???

Discussion in 'Math' started by HMHQ8, Jan 29, 2008.

1. ### HMHQ8 Thread Starter Member

Jan 29, 2008
10
0
Hi

I need help, not only for solving these boolean algebra problems but also to explain the solution

-Which if any of the following are valid Boolean expressions? What is wrong with those that are not?

a. (A.B) + (A.C)

b. A + B . (C + D(.E + F))

c. X1 . X2 = (X1/X2)

d. 1 . (0 + 1. (0 + A))

2. ### chesart1 Senior Member

Jan 23, 2006
269
1
Equation c is not a valid bolean expression because boolean algebra does not use the / operation.

Equation b is not a valid boolean expression becaue of one syntax error. The "." should be outside the parenthesis. A+B.(C+D.(E'+F')

A valid expresion follows the proper syntax of boolean expressions.

Elements of Boolean Algebra

3. ### HMHQ8 Thread Starter Member

Jan 29, 2008
10
0
Thank you chesart1

4. ### HMHQ8 Thread Starter Member

Jan 29, 2008
10
0
what about ( d )?

5. ### Dave Retired Moderator

Nov 17, 2003
6,960
171
d) is valid - the answer is A'

Dave

6. ### juanc2719 New Member

Mar 20, 2008
2
0
i have a proyect and i dont know how i start this exercise. i have to simplyfy this one using morgan theoty and bolean algebra.
Please can anyone solve it with all the steps so i can understand and do the others.

A'B'D + A'BD' + BC'D' + BCD' + AB'C'D + B'CD

7. ### Dave Retired Moderator

Nov 17, 2003
6,960
171
Your initial question was moved here where you have been offered advice. Please deal with any queries you have on this in that thread.

Dave