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 Topic: sigma notation
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 Sigma notation 2019-12-04 From Kenneth:What would be used for the top and bottom indices for the sigma sign in my example shown below? If the amounts were 1 + 2 + 3, the top index would be 3 and the bottom would be i = 1, but if the amounts are 1 + 2 + 4, or 1 + 0.05 + 1/3, what would the indices be since these amounts are in an uneven pattern. I thank you for your reply and explanationAnswered by Harley Weston. 2+6+12+20+30+42 2009-04-24 From fredy:what is the sigma notation for the series 2+6+12+20+30+42?Answered by Stephen La Rocque. Sigma notation 2006-12-05 From Marie:how do i get this in sigma notation...i only need an explanation 1^2 + (2+3)^2 + (4+5+6)^2 + (7+8+9+10)^2....Answered by Penny Nom.

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