I just got back from my diff eq exam.

One of the problems was y'+y*(tan(x)) = 8*sin(x^3)

At a first glance, it looks like a simple first order linear diff eq. But after getting an integrating factor of sec(x), how do I find the integral of 8*sin(x^3)cos(x)?

Wolfram alpha seems to be returning a cryptic answer.

http://www.wolframalpha.com/input/?i=y%27%2By*%28tan%28x%29%29+%3D+8*sin%28x^3%29