Find the sum of each infinite geometric series:

MATHEMATICS · Multi-part · A Level · Mathematics · Sequences and series · Sequences and series

Problem

Find the sum of each infinite geometric series: (1) 1.21−1.1+1−…1.21-1.1+1-\dots (2) 143+43+821+…\frac{14}{3}+\frac{4}{3}+\frac{8}{21}+\dots

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