I got this problem from an old algebra book and I seem to have got a mental block with Part 2:
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Mathematics, 29.02.2020 22:08 floverek
I got this problem from an old algebra book and I seem to have got a mental block with Part 2:
Part 1. Find the nth term for the sequence 1, 3/2, 5/4, 7/8?
Part 2. If the sum of n terms is denoted by s, write down the series obtained by subtracting 1/2s from s, and find its value in terms of n. Hence find s.
I obtained nth term = (2n - 1)/2^(n-1) for Part 1.
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