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Homework Statement
Is there a general formula for the sum of such a series (or can it be self derived) ?
2^2 + 4^2 + 6^2 + 8^2 ... N^2 (all the way till some even number N)
Homework Equations
[itex]\sum r^2[/itex] (from r=1 to r=N) = 1/6 * n(n+1)(2n+1)
The Attempt at a Solution
No clue where to start.