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butterflydreamer
 one year ago
Best ResponseYou've already chosen the best response.2Since each side of the xylophone has "n" wooden bars and there is an extra one in the centre, do we treat this as two series?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0well, there are \(2n+1\) bars, so the \(2n\) are from the left,right side, and then the \(1\) is the middle. so you can just model it as the middle plus double a series for both sides

butterflydreamer
 one year ago
Best ResponseYou've already chosen the best response.2hmm.. so what if i did something like this? \[S = \frac{ n }{ 2 } (20 + n(n1)b) + \frac{ n+1 }{ 2 }(20 + nb) \]

butterflydreamer
 one year ago
Best ResponseYou've already chosen the best response.2Just tested it by expanding and i eventually proved S = bn^2 + 20n + 10 so i guess it works :)
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