Sums of Squares Formula (VIDEO!)
We have a formula for the sums of integers (one-th powers):
and a formula for the sums of cubes:
1^3 + 2^3 + 3^3 + .. + N^3.
Here, at last, is a video deriving the formula for the sum of squares
1^2 + 2^2 + 3^2 + … + N^2.
We use just simple techniques.
We end with some big questions about all these formulas.