Sequences and Series

Question 1

A geometric series is CONVERGENT if and ONLY if …

Answer 1

|r| <1 -1< r <1

Question 2

What formula can we only use for a convergent series ( |r|<1 )

Answer 2

S infinity =a/1-r

Question 3

The terms of a series are getting smaller so the series is know as a… because …

Answer 3

Convergent series because as n tends to infinity (n gets larger) Sn gets closer and closer to a finite value , S infinity