Question: 2x2 - y3 2. (a) (8 pts) Demonstrate that lim does not exist. (x,y)->(0,0) 4x + y 2x- y' (b) (4 pts) Evaluate lim Hint:

2x2 - y3 2. (a) (8 pts) Demonstrate that lim does not exist. (x,y)->(0,0) 4x + y 2x- y' (b) (4 pts) Evaluate lim Hint: Consider using polar coordinates. (x,y)->(0,0) 4x +y
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