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$$\int_0^{ + \infty } {\left( {\frac{x}{{1 + {x^6}{{\sin^2 x}}}}} \right)dx}$$

I'd like your help with see why does?? I tried to compare it to other functions and to change the variables, but it didn't work for me.

Thanks a lot!

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    what do you mean by `why does ??`. fyi, Mathematica says this integral does not converge.2012-11-27

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