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3 years ago

Find the sum of nth term of the series 1+3/2+5/2^2+7/2^3+.......

Mathematics

1 answer:

ioda3 years ago

6 0

Answer:

an = (1 + 2·(n - 1))/2^(n - 1) = 2^(1 - n)·(2·n - 1)

sn = 6 - 2·0.5^n·(2·n + 3)

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