1. The problem statement, all variables and given/known data Find the limit as X, and Y both approach 0 of (X2Y)/(X2 + Y4) 2. Relevant equations The equation from above. 3. The attempt at a solution I have been doing the technique of approaching from different lines such as y = x, or x = y, x = 0, and y = 0. All of them give me a limit of zero, so that will not do. I graphed the function online, and it appears as if the function does have a limit of zero. How would I prove this? I think I need to do something with polar coordinates, but I am not sure how to do that.