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Mathematics 6 Online
OpenStudy (anonymous):

Find S12 for the series 1 + 1.5 + 2.25 + 3.375 +…

OpenStudy (anonymous):

you might notice that this is similar to the \(S=1+2x +3x^2+...\) do you want to start with this? however, I do suggest simply writing out all the terms and adding them together

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