equation: http://img292.imageshack.us/img292/6239/untitledkl6.jpg [Broken]
can use geometric series i think.
The Attempt at a Solution
I think this is a geometric series, i plugged numbers into the equation, starting from 1 and got: 1/16 + 64/7 + 256/49 +...
maybe i can use a formula something like this? --> 1/(1-a)
need help with this please.
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