$\displaystyle

\int \frac{x}{1+x^4} \ dx

$

I first started by setting $\displaystyle u = 1+x^4$ ,but then $\displaystyle du = 4x^3dx$ , doesn't work out with the $\displaystyle xdx$ that is left.

Any ideas?

By the way, I had finished my Spring Semester, with the help of this forum, I was able to pull As in my Calculus I and Linear Algebra. Just wanna thank you all!!!