1. The problem statement, all variables and given/known data Find the limit: an= 2n/(n2+1)1/2 2. Relevant equations n/a 3. The attempt at a solution Because n is approaching infinity, is it OK to disregard the +1 in the denominator and just consider the denominator to be n? This would then divide out the n in the numerator leaving 2 which is the correct answer. I think this is acceptable, but I wanted to run it by you all to confirm. Thank you in advance for your help.