Cullan6394 Cullan6394
  • 07-06-2023
  • Mathematics
contestada

Consider the function f:R 2
→R:(x,y)↦f(x,y)={ x 2
+y 2
xy
​
0
​
if (x,y)

=(0,0),
if (x,y)=(0,0).
​

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