(x*sqrt(x^2+1)*(x^8/10-9*x^6/(10*8)+9*7*x^4/(10*8*6)-9*7*5*x^2/(10*8*6*4)+9*7*5*3/(10*8*6*4*2))-9*7*5*3/(10*8*6*4*2)*ln(x+sqrt(x^2+1)))'

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