Simple Integral. I'm a bit rusty.

[maherelharake]

Homework Statement

Take the integral of
1/[(z^2 + x^2) ^ 3/2] dx where z is a constant.

Homework Equations

The Attempt at a Solution

I tried substitution, but couldn't get it to work. Thanks in advance.

 

[rock.freak667]

Have you tried x=ztanθ ?

 

[maherelharake]

Yes but I was confused on the next step. I tried to look into trig substitutions.

 

[rock.freak667]

Could you post your entire working?

 

[maherelharake]

Oh, never mind I think I just figured it out. Thanks for your help!