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rooski
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Homework Statement
using set theroetic notation, write down and prove the contra-positive of:
GOD WHAT IS WRONG WITH LATEX? It is completely ruining my set notation! And i can't fix it!
If [tex] B \cap C \subseteq A[/tex] Then [tex](C-A) u (B-A)[/tex] is empty.
The Attempt at a Solution
I'm awful with set notation and finding inverses of things. Here's my guess at what the contra-positive is:
if [tex] B \cup C \notin A [/tex] then [tex] ( C - A ) \cup ( B - A ) [/tex] is empty
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