Grandi's Series

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In this video we prove the infinite sum (-1)^n.
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You can get 1/2 from the binomial theorem, integrating sinx*cosx, cesaro summation, etc.

ValkyRiver
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Good explanation.. Very low voice.. But, still good and useful

antowngeorgemansour
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= = 0 (Not 1), or do I have the rules of brackets wrong?

stevenhutton