(adsbygoogle = window.adsbygoogle || []).push({}); 1. Demonstrate by means of truth tables the validity of the following identities.

a) DeMorgan's theorem for two variables

X'Y' = X' + Y'

' is the bars that are above the letters.

Can someone explain this to me? I mean the truth table is just gonna look like this: X'Y' X' Y'

I just need to know where and 0's and 1's go and why. Seems so easy, but I haven't been able to understand it.

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# Homework Help: Truth tables - I don't get it

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