1. The problem statement, all variables and given/known data f'(x)= (2+x^2)/(1+x^2), find f(x). 2. Relevant equations 3. The attempt at a solution I am pretty sure you have to use integration by parts... but I don't think we learned it yet. Is there a way to do this without using integration by parts? If not, how would I use integration by parts for his question?