I wasnt really sure where I was supposed to post this problem, so I figured this place is as good as any. 1. The problem statement, all variables and given/known data x2 - the inversion of x2. (Yes, I was too dumb to figure out how to get "_" on it.) We are given that f(x1,x2,x3) = x1x2 v x2x3 v x1x3 = x1&x2 v x2&x3 v x1&x3 Prove, that f(x1,x2,x3) = x2 2. Relevant equations 3. The attempt at a solution Well I tried replacing x2 with x2, but I dont really know how that changes anything. I have no idea how you are supposed to end up with x2. And even when trying to replace the x'es with 0's and 1's, I DO NOT get that x1x2 v x2x3 v x1x3=x2 that is f(x1,x2,x3) = x2 Am I doing this whole thing wrong? Because it doesnt make much sense to me.