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  3. let {xn} be a real summable sequence with xn ? 0 e

Let {xn} be a real summable sequence with xn ? 0 eventually. Prove that ?(Xn*Xn+1) is...

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Advance Math

Let {xn} be a real summable sequence with xn ? 0 eventually.Prove that ?(Xn*Xn+1) is summable.

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