The r^{th} term u_{r}, of a series is given by u_{r}=(1/3)^{2r-2} + (1/3)^{3r-1}
Express ∑^{n}_{r=1 }u_{r }in the form A(1-B/27^{n}) where A and B are constant.
Find the sum of infinity of the series.
The r^{th} term u_{r}, of a series is given by u_{r}=(1/3)^{2r-2} + (1/3)^{3r-1}
Express ∑^{n}_{r=1 }u_{r }in the form A(1-B/27^{n}) where A and B are constant.
Find the sum of infinity of the series.
Please help me! Thank you!
where , are in GP with common ratio and respectively. Can you find the sum to term of and simplify?
Last edited by kalyanram; Sep 17th 2012 at 09:39 PM.