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Question

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1a0+xa0a1+x2a0a1a2++xna0a1a2an=1a0a0xa1+xa1xa2+xan1xan+x.

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Solution

Put 1ar+xarar+1=1ar+yr
then (ar+yr)(ar+1+x)=arar+1;
yr=arxar+1+x;
Series =1a0a0xa1+xa1xa2+x......an1xar+x.

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