Use polar coordinates to find the limit. [If (r, 0) are polar coordinates of the point (x, y) with / 2 0, note that r - 0+ as (x, y) - (0, 0).] (If an answer does not exist, enter DNE.) lim (x, V) - (0, 0) (*2 + x2) In(x2 + y?) X Need Help? Read It