Question

find the sum of infinity of the siries 1-1/2+1/4-1/8+------------​

Answer 1

Answer:

Let me define the terms .Letter a is the first term(1 ).r is the common ratio.r=1/2(ratio of a term and its preceding ones)

Then,sum=1/(1–0.5)

1/0.5

Approx. equal to 2 .