1. ## Integration

hey ppl, need help with this one: $\int \frac{\ln (x^2-4)}{\sqrt{x^2-4}}dx$. Tried parts, but it got too messy in the end. Any ideas?

2. Have you tried trigonometric substitution?

3. yeah, by substituting $x=2\sec\theta$, i ended up with $2\int \ln (2\tan\theta)\sec\theta d\theta$.

Would there be another way to solve this question?