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[" If the sum of the series "1^(2)+2.2^(...

[" If the sum of the series "1^(2)+2.2^(2)+3^(2)+2.4^(2)+5^(2)+2.6^(2)+...." upton terms,when nibern,is "(sin47^(@))/(2)],[" then the sum of the series,when "n" is odd,is "],[[" (1) "n^(2)(n-1)," (2) "(n^(2)(n-1))/(2)," (3) "(n^(2)(n+1))/(2)," (4) "n^(2)(n+1)]]

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