Problem 1. Let f(a:,y) : $224212. Find the domain of f Does lim 37,7 (awN070) J) exist? If so, nd it. If not, explain why. Problem 2. Compute the following limit, or show it does not exist: 2 lim Amy ' . (x,y)+(0,0) 001 + if Problem 3. Compute the following limit, or show it does not exist: II? (sin(y))2 \"\"1 ' (WM-K070) 36' + y Problem 4. Consider the function 3x234 fem/y) : m for (way) 7g (070): 0 for (x,y) = (0,0). What are the points (a, b) such that f is continuous at (a, b)