Asked by Adesanya
The first term of a GP is A and the common ratio is R
Given that A=2r and the sum to infinity is 4.calculate the third term
Given that A=2r and the sum to infinity is 4.calculate the third term
Answers
Answered by
Steve
S = a/(1-r)
a = 2r, so
2r/(1-r) = 4
Now just solve for r, and you can then get
A3 = ar^2
a = 2r, so
2r/(1-r) = 4
Now just solve for r, and you can then get
A3 = ar^2
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