SOLUTION: How to compute the sum of this series?
-1+2-3+4-...-(2n-1)+2n
Algebra.Com
Question 1173115: How to compute the sum of this series?
-1+2-3+4-...-(2n-1)+2n
Answer by greenestamps(13200) (Show Source): You can put this solution on YOUR website!
The given series is 2n terms.
Add the terms in pairs to get a new series of n terms. In each pair the sum is 1; so the sum of the original series is n(1) = n.
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