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((((2x)/(sqrt(1+x)))+sqrt(x-1))/((1)+sqrt((x-1)/(x+1))))*((2x)/((x+1)*sqrt(x+1)-(x-1)*sqrt(x-1)))
((((2x)/(sqrt(1+x)))+sqrt(x-1))/((1)+sqrt((x-1)/(x+1))))*((2x)/((x+1)*sqrt(x+1)-(x-1)*sqrt(x-1)))
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