Evaluate the sum below w/ a supporting formula. Find the sum

Mathematics
Tutor: None Selected Time limit: 1 Day

It is in sigma notation with n=1, 700 on top of the sigma, and 2n to the right as the formula. 

Feb 16th, 2015
it can be expanded into 2[n(n+1)/2] = n(n+1)

here, n= 700, so,

answer = 700(700+1) = 700*701 = 490700|


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Feb 16th, 2015

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