I had an exam last night and I was stuck on this problem.
I went home where I had more time (and resources) and still can't figure it out, and I won't get my exam back (it was a final).
The Attempt at a Solution
I have tried combining into one fraction, splitting up in to two separate limits, I can't use L'Hopital's as it is 1/inf.
What am I missing? The rest of the exam was somewhat easy, but I didn't even know where to start!
Can someone help me work though it? I think I just need help with a first step.