We have the function if (x, y) # (0,0), xy x²+y² f (x, y) if (x, y) = (0,0), (а) Find lim (x,y)→(0,0) f (x, y), if it exists, or show that the limit does not e (o o)

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter3: Functions
Section3.3: Rates Of Change And Behavior Of Graphs
Problem 2SE: If a functionfis increasing on (a,b) and decreasing on (b,c) , then what can be said about the local...
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(a)

We have the function
{
xy
x²+y²
if (x, y) # (0,0),
f(x, y) :
if (x, y) = (0,0),
(a) Find
lim
(x,y)→(0,0)
f (x, y), if it exists, or show that the limit does not exist.
(b) Calculate fæ(0,0) and fy(0,0) if they exist, otherwise explain why they don't exist.
(c) Are fæ and fy continuous at (0,0)? Explain why.
Transcribed Image Text:We have the function { xy x²+y² if (x, y) # (0,0), f(x, y) : if (x, y) = (0,0), (a) Find lim (x,y)→(0,0) f (x, y), if it exists, or show that the limit does not exist. (b) Calculate fæ(0,0) and fy(0,0) if they exist, otherwise explain why they don't exist. (c) Are fæ and fy continuous at (0,0)? Explain why.
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