Question

Boolean Algebra / Digital logic

Answer 1

Use algebraic manipulation to prove that \[(x+y)*(x+ybar)=x\]

Answer 2

* is equivalent to the "and" operator

Answer 3

help meeeeeeeee

Answer 4

perhaps i shouldn't step in where i am not fluent, but

can you do this as set theory? this is the same as saying (in english) the intersection of the set
X intersect Y with X intersect Y^c is X, and that is pretty obvious since if you are in X you are either in Y or not in Y, that is they are disjoint.

what symbols are you supposed to use?

Answer 5

I don't see why not it uses Venn diagrams later in the chapter

Answer 6

now take the intersection of those two, that is what is shaded in both, and see that you get all of X

Answer 7

damn second one is a mistake

Answer 8

there. that is correct. now take the intersection and see that you get back all of X