1. The problem statement, all variables and given/known data Determine the set of points at which the function is continuous: f(x,y)= (x^2)(y^3)/[2x^2 + y^2] if (x,y) is not equal to (0,0) = 1 if (x,y) is equal to (0,0) 2. Relevant equations Definition of the limit of a function of two variables: lim f(x,y) as (x,y)-->(a,b)=L if for every number E>0 there is a corresponding number D>0 such that if 0<sqrt[(x-a)^2 + (y-b)^2]< D then the absolute value of f(x,y) - L < E. 3. The attempt at a solution f is continuous on R^2 except at possibly the origin. Since x^2< or = 2x^2 + y^2, the absolute value of (x^2)(y^3)/[2x^2 + y^2] is < or = the absolute value of y^3 (which has a limit of 0 as (x,y) approaches 0). Now how can I use this to determine the limit of f(x,y)? I'm guessing it has something to do with the Squeeze Theorem, or a direct application of the definition of the limit of a function of two variables.