Solving the Integral of x/(x^3+1): Tips and Tricks

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This is really a tough problem.
I was able to solve it using partial fractions at first, completing the square, and several substitutions. I get the same answer as Wolfram Alpha.

I feel as though there is an easier way. Any hints?
 
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I don't think so, I'd probably start with a partial fraction decomposition too. Maybe there's some trick substitution someone will think of, but I don't see it.
 
There are two things I don't understand about this problem. First, when finding the nth root of a number, there should in theory be n solutions. However, the formula produces n+1 roots. Here is how. The first root is simply ##\left(r\right)^{\left(\frac{1}{n}\right)}##. Then you multiply this first root by n additional expressions given by the formula, as you go through k=0,1,...n-1. So you end up with n+1 roots, which cannot be correct. Let me illustrate what I mean. For this...
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