the sum of an infinite geometric series with first term a and common ratio r < 1 is given by.
The sum of a given infinite geometric series is , and the common ratio is
What is the second term of this series?
by pluging the info given i got for an a value of which is not the value of the second term but that is where i don't understand how you find out what the second term is.
the ans for the second term is how did they get this. I looked at examples from several books but still ?
thnx ahead for help