- #1
sbc824
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Homework Statement
show S1 U S2 = (S1' ∩ S2')'
The Attempt at a Solution
I'm pretty sure I have this right or I'm close
Let x ∈ S1 U S2
x ∈ S1 or x ∈ S2
Since x ∈ S1 or S2, then x ∉ S1' and S2'
If x ∉ S1' and S2', then x ∈ (S1' and S2')'
Therefore, S1 U S2 = (S1' ∩ S2')'
Homework Statement
show S1 U S2 - (S1 ∩ S2') = S2
The Attempt at a Solution
I have not attempted this as I'm not sure how to start this one...any help would be appreciated.
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