How to derive a formula for the first n powers of an integer? In particular, sum of 2^n? I'm looking for a proof that not only utilizes algebraic manipulation but is also easily seen visually.
How to derive a formula for the first n powers of an integer?
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exponentiation
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2Probably you mean the sum of a geometric progression: http://en.wikipedia.org/wiki/Geometric_progression – 2012-03-14
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0Yes, I think this is a specific type of geometric progression. However, I'm looking for a proof that not only utilizes algebraic manipulation but is also easily seen visually. – 2012-03-14