At 18:27 21/06/2013 +0000, Jonathon 'Toki' Kantoor wrote:
>Is there a formula, extension, or something in calc that enables one
>to calculate the sum of 1..N, where N is an integer between 0 and 100 000 000?
Yes. Sigma (1 to n) is n(n+1)/2.
>If so, what is the formula, extension, or something?
=Xn*(Xn+1)/2
I trust this helps.
Brian Barker
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