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I wasnt really sure where I was supposed to post this problem, so I figured this place is as good as any.

x

We are given that

f(x

Prove, that

f(x

Well I tried replacing x

x

that is

f(x

Am I doing this whole thing wrong? Because it doesnt make much sense to me.

## Homework Statement

x

_{2}- the inversion of x_{2}. (Yes, I was too dumb to figure out how to get "_" on it.)We are given that

f(x

_{1},x_{2},x_{3}) = x_{1}x_{2}v x_{2}x_{3}v x_{1}x_{3}= x_{1}&x_{2}v x_{2}&x_{3}v x_{1}&x_{3}Prove, that

f(x

_{1},x_{2},x_{3}) = x_{2}## Homework Equations

## The Attempt at a Solution

Well I tried replacing x

_{2}with x_{2}, but I dont really know how that changes anything. I have no idea how you are supposed to end up with x_{2}. And even when trying to replace the x'es with 0's and 1's, I DO NOT get thatx

_{1}x_{2}v x_{2}x_{3}v x_{1}x_{3}=x_{2}that is

f(x

_{1},x_{2},x_{3}) = x_{2}Am I doing this whole thing wrong? Because it doesnt make much sense to me.

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