Hello,

No, we have or .

Write [tex]\tan^{-1}[/tex] or [tex]\arctan[/tex] .I am working on this problem,

, it's actually tan^-1(2x) but I'm not sure how to insert the negative to make it the inverse.

I don't think so since you don't know an antiderivative of . One possibility is to see that if you let and then and so is a rational fraction : we don't have to integrate anymore.I made

Am I heading in the right direction?

Does it help ?