Question

Integrals
How do I integrate (x)/(1+9x^2)dx?
If im using the arctan equation, how do I move the x away?

Answer 1

try \(u=1+9x^2\)

Answer 2

in other words, you are not going to use arctan. you are going to get a log

Answer 3

(1/18)ln| 1+9x^2 | +c ?

Answer 4

oh right. \(\frac{1}{18}\) that should do it