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November 23rd, 2014, 05:05 AM  #1 
Member Joined: Oct 2014 From: Norway Posts: 42 Thanks: 1  How can I find the sum of this infinite series?
I've been trying for a long time to find the sum of this. Would be nice if someone could help me! Thanks. 
November 23rd, 2014, 06:01 AM  #2  
Senior Member Joined: Jan 2012 From: Erewhon Posts: 245 Thanks: 112  Quote:
\\ \phantom{\sum_{n=0}^{\infty}\frac{4+2^n}{4^{n+2}} } = \frac{1}{4}\sum_{n=0}^{\infty}\frac{1}{4^{n}}+ \frac{1}{16} \sum_{n=0}^{\infty} \frac{1}{2^{n}} $$ CB  

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