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Lukecrayonz
??? What in the world is this Use U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, A= {1, 3, 5}, B= {5, 6, 8, 9} and C = {2, 4, 10}, find A upside down U thingy B?
What do you even call this!?
\( \color{Black}{\Rightarrow A \cap B}\) means the intersection between A and B. Intersection are the common elements in both the sets. Get it?
Oh.. Well now I just feel stupid, never even seen this before.
lol, so did you find the common elements?
Yep, so you'd denote it by \(A \cap B = \{5\}\)
Have you ever had those nights where you literally forget everything you know about math..? Because this is that night for me.
I'm serious, I am taking a test and i'm like uhhhhhh, forgetting how to factor etc. I took Precalc and got an A for godsake haha