When all the terms of a geometric series are doubled and the first term is a = 1, what is the sum to infinity in terms of the common ratio r?
University of Ilorin MTH101 2026-exam past question
- 1/(1 − r)
- 1/(1 − r)²
- 1/(1 − 2r)
- 1/(1 − 2r)²
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