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4* int sqrt(1+(2*x^2*(1+2*x^2)^2)/((9-4*x^2*(1+x^2))*(sqrt(9-4*x^2*(1+x^2))-1))) dx from 0 to 1
4* int sqrt(1+(2*x^2*(1+2*x^2)^2)/((9-4*x^2*(1+x^2))*(sqrt(9-4*x^2*(1+x^2))-1))) dx from 0 to 1
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