Application of DerivativeHard
Question
The sum of the first n terms of the series 12 + 2.22 + 32 + 2.42 + 52 + 2.62 + ...... is 
when n is even. When n is odd, the sum is -
when n is even. When n is odd, the sum is -Options
A.
B.
C.
D.
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