Hi, 1. The problem statement, all variables and given/known data lim (xy²)/(sin(x² + y²)) (x,y) -> (0,0) 3. The attempt at a solution I think the answer is 0, but I don't know how to get rid of the sin (x² + y²). I thought about using taylor series but I'm not sure if that works with two variables. Can someone help me out?