Find the sum of each of the following infinite geometric series:

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

Problem

Find the sum of each of the following infinite geometric series: (1) (a)

18+12+8+\frac{16}{3}+\cdots

(2) (b)

18.9-6.3+2.1-0.7+\cdots