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avatar+544 

A closed form for the sum \(S = \frac {2}{3+1} + \frac {2^2}{3^2+1} + \cdots + \frac {2^{n+1}}{3^{2^n}+1}\)
is  1 - (a^n+b)/(3^2n+c - 1) where a and b are integers. Find a+ b+ c

waffles  Feb 14, 2018
edited by waffles  Feb 16, 2018
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2+0 Answers

 #1
avatar+149 
+1

what do we find?

 

 

smileysmileysmiley

qualitystreet  Feb 14, 2018
 #2
avatar+544 
0

sorry

waffles  Feb 16, 2018

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