The most challenging part of this unit for me was actually when to use the union symbol.
I know that a lot of times, the problem will have an "or" used, but sometimes, the union symbol would still be used when "or" was not present in the problem. I think I understand it a little better than before, but it still isn't fully clear to me.
If this isn't clear, please let me know and I can help! I mean, I know now, but that doesn't mean I'm going to come up to you and say, "Hey, remember the union symbol?" We can sit down sometime and show you the difference between the "U" and intersection symbol (or & and).
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