1. The problem statement, all variables and given/known data (2+y^2)/sqrt(4+y^4) as y goes to positive infinity 2. Relevant equations 3. The attempt at a solution I divided it out by y^2 to get lim y-> inf+ (2+y^2)/y^2 = 1 and the bottom lim y -> inf+ sqrt(4+y^4)/y^2 I can't solve.. by the way, I can't use L'hopitals rule thanks!!