Integral Problem: Solving x^2+a^2

[orthovector]

does anybody know how to take this integral?

$$\int \frac{dx}_{({x^2 + a^2})^{3/2}}$$

 

[csprof2000]

Not too bad.

Just use a trig substitution. let x = a tan Q, and then it works out nicely.

 

[orthovector]

well, look at that...!

thanks!