Bart Platak
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 Oct 11 awarded Autobiographer Nov 3 accepted Cardinality of sets and set differences Nov 3 comment Cardinality of sets and set differences @amWhy: Thanks for doing so. I would've done so in the first instance (images can disappear in future which won't help any1 reading this question later on) but I really need to get on with more questions. Thanks :) Nov 3 comment Cardinality of sets and set differences +1 Thanks a lot! The visual representation really helps I will make sure I do it from now on! :) Nov 3 comment Cardinality of sets and set differences When I formulated the problem I was using $\#(P \cap C) = 7$ and similar, I can not imagine how to use union/intersection to indicate P but not M and not C (unless I use compliment). Nov 3 awarded Editor Nov 3 revised Cardinality of sets and set differences edited body Nov 3 asked Cardinality of sets and set differences Sep 21 awarded Custodian Aug 13 awarded Supporter Jun 6 awarded Student Jun 6 awarded Scholar Jun 6 comment Evaluating integral similar to $\sin^{-1}(3x)$ Thanks a lot! :) This makes perfect sense, I can't believe I haven't spotted this way in all the time I spent trying to solve this problem. Lack of sleep is getting to me. Thanks again, you're a life savior! :) Jun 6 accepted Evaluating integral similar to $\sin^{-1}(3x)$ Jun 6 reviewed Approve Evaluating integral similar to $\sin^{-1}(3x)$ Jun 6 asked Evaluating integral similar to $\sin^{-1}(3x)$