Unformatted text preview: d) lim ( x,y ) (0 , 0)  x  y   x  +  y  3. Let f ( x, y ) = p x 2y 2 a) Sketch the domain of f . b) Explain why lim ( x,y ) (0 , 0) f ( x, y ) does not exist. c) How could we modify the denition of a limit so that the limit in b) exists? What would be the value of the limit? 1...
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 Spring '08
 WOLCZUK
 Math, lim, x,y, Sketch level curves

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