Question: Consider the function f(x, y) = (x 2 + y 2 ) 2/3 . Show that f(x, y)=3(x 0, 4x + y)1/3 (x, y) =

Consider the function f(x, y) = (x2 + y2)2/3.


Show that


f(x, y)=3(x 0, 4x + y)1/3 (x, y) = (0, 0) (x,

f(x, y)=3(x 0, 4x + y)1/3 (x, y) = (0, 0) (x, y) = (0, 0)

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