Not More Maths for Dummies 1.1: Sigma notation
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just the type of teacher i wanted Q_Q JACKPOT WOOHOO XD
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@deadXbun its formula then will be: [n(n+1)(2n+1) ]/ 6
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Nice!! Somehow I never learned this in school or had absolutely no recollection of it whatsoever. Thank you very much!
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YOU ROCK. THANKS ALOT
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@silensir1 No problem. Glad I could help :) .
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what if it was i^2? will it be n(n+1) divided by 2 and then you square the result?
deadXbun 2 weeks ago
@deadXbun That was meant to be the subject of my next video. However, I used a different background for that and later decided I didn't like it, so I'll have to re-make all the slides :( ..
KingsIndianCR 2 weeks ago
@KingsIndianCR awwww. i did realise that it was 1^2 + 2^2 + 3^2 +... so on. what if it was like 1 to 100 it'd be omg to put all those into a simple calculator. Wonder if there was another (shortcut) formula to that? looking forward to your next video. shall subscribe xD
deadXbun 2 weeks ago
@deadXbun Thanks :) !
I can tell you now that there is a formula for 1^2 + 2^2 + 3^2 + ... + n^2 - it's n(n+1)(2n+1)/6, and I'll prove that in two different ways in my video. Just to show that there's often no one 'correct' way to prove things :P .
KingsIndianCR 2 weeks ago
You explain it well!
Thanks for the video!
MrOrozco27 1 month ago
@MrOrozco27 No problem. Glad I could help :) .
KingsIndianCR 1 month ago