Evaluate the indefinite integral:
The Attempt at a Solution
My first attempt at the solution was to try using substitution. I set u=x^2+1. so du=2x dx and x=sqrt(u-1). Then I rewrote the integral so it is [tex]\int[/tex]7du/4usqrt(u-1). This is where I don't know where to go with this attempt.
I'm pretty sure I'm going about this problem all wrong. If I could just get a push in the right direction I'd really appreciate it :)