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The sum of the first n terms of the series, 12+2.22+32+2.42+52+2.62+….isn2(n+1)2, when n is even. When n is odd, the sum is |
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Answer» The sum of the first n terms of the series, 12+2.22+32+2.42+52+2.62+….isn2(n+1)2, when n is even. When n is odd, the sum is |
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