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Erlebnisland Mathematik

Proofs without words: Sum of square numbers

A “proof without words” convincingly justifies a mathematical claim just by picture.

Here a formula for the sum of the first n squares is demonstrated, $latex 1^2 + 2^2 + 3^2 + \dots + n^2$ = $latex \frac{1}{6}n(n+1)(2n+1)$.

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beweis-summe-quadratzahlen