- #1
Xetman
- 8
- 0
Homework Statement
http://i50.tinypic.com/zxw6qr.png
a>0
a
∫ x√(x^2+a^2)dx (a>0)
02. The attempt at a solution
u=x^2+a^2
du=2xdx
I looked it up online and I saw you needed to use trig.
How do you use trig for this problem?
Note: I have not learned integration by parts, just u-sub.