Question: Limits at (0, 0) may be easier to evaluate by converting to polar coordinates. Remember that the same limit must be obtained as r

Limits at (0, 0) may be easier to evaluate by converting to polar coordinates. Remember that the same limit must be obtained as r → 0 along all paths to (0, 0). Evaluate the following limits or state that they do not exist.(x - y) lim 2 (x,y) (0,0) x + xy + y

(x - y) lim 2 (x,y) (0,0) x + xy + y 2

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