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Find the sum of the series : 1^(2) + 2...

Find the sum of the series :
`1^(2) + 2^(2)x + 3^(2)x^(2) + 4^(2) x^(3)+…. oo`

Text Solution

Verified by Experts

The correct Answer is:
`(2(1-x^(n)))/((1-x)^(3)) - (1+(2n-1)x^(n))/((1-x)^(2)) - (n^(2)x^(n))/(1-x)`
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