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OpenStudy (anonymous):
What is the sum of 1/2 + 1/2^2 + 1/2^3 +...+ 1/2^2012? Help me please?
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OpenStudy (zarkon):
let S= 1/2 + 1/2^2 + 1/2^3 +...+ 1/2^2012 then 2S= 1+ 1/2 + 1/2^2 +...+ 1/2^2011 subtract the two equations
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