# Math Help - Need help integrating

1. ## Need help integrating

Hey all, I just have an interval that needs anti-deriving. Here it is:

integral of x^2/(x^2+y^2)^3/2 dx

Thanks for any help you can provide,
Dave

2. Originally Posted by urnidiot
Hey all, I just have an interval that needs anti-deriving. Here it is:

integral of x^2/(x^2+y^2)^3/2 dx

Thanks for any help you can provide,
Dave
remember, we are integrating with respect to x, thus we treat y as a constant here. how would you do it if y was just some other number? the conventional way would be to use a trig substitution.

let $x = y \tan \theta$

can you take it from there?

3. Thank you sir, I think I've got it now.

-Dave