SOLUTION: The sum to infinity of a geometric series is four times the first term. Find the common ratio.

Algebra ->  Sequences-and-series -> SOLUTION: The sum to infinity of a geometric series is four times the first term. Find the common ratio.       Log On


   

Question 1151284: The sum to infinity of a geometric series is four times
the first term. Find the common ratio.

Answer by ikleyn(52803) About Me  (Show Source):
You can put this solution on YOUR website!
.

a%2F%281-r%29 = 4a,


where "a" is the first term.


Cancel the factor "a" in both sides and then find the common ratio  "r".