Use polar coordinates to find the limit. [If (r, 0) are polar coordinates of the point (x, y) with r a 0, note that r > 0+ as (x, y) > (0, 0).] (If an answer does not exist, enter DNE.) _ 2_ 2 lim 85 X y ' 8 (x,y)-(o,0) x2 + y2 0 X Need Help