SOLUTION: Evaluate: 4 (sigma sign here) 1/2 r(r+1) r=1

SOLUTION: Evaluate: 4 (sigma sign here) 1/2 r(r+1) r=1

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Question 1054496: Evaluate:
4
(sigma sign here) 1/2 r(r+1)
r=1
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!

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