Isn't it just ?
I need a little help with this summation problem.
Find the value of,
I tried to solve it like this,
What is the series,
Its clearly not a A.P. It also doesn't seem like a G.P. How do I calculate the sum of such a series?
Thanks for your help.
P.S. Latex doesn't work anymore. I used QuickLatex to explain the problem.