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Proof without Words: Sum of Cubes

by Alan L. Fry (University of North Carolina, Greensboro)

This article originally appeared in:
Mathematics Magazine
January, 1985

Subject classification(s): Numbers and Computation | Patterns and Sequences
Applicable Course(s): 3.7 Discrete Math | 4.1 Introduction to Proofs

The author presents a visual proof that \(\sum_{i=1}^n i^3 = (\sum_{i=1}^n i^2)\).


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