Sum of the Cubes of "n" Consecutive integers - Simple Proof

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In this video I continue on my summation proofs series and show the proof for determining the formula for the sum of the cubes of "n" consecutive integers, i.e. 13 + 23 + 33 +.... + n3. This is a similar proof to my sum of squares proof (see video link below) and involves the use of the useful "telescoping" or collapsing sum which I illustrate in the video.


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Sum of the Cubes of "n" Consecutive integers

Proof of sum of n cubes.PNG

Simple Proof

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We start off the proof with the “telescoping sum” (or the collapsing sum):

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Example

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